Ternyata, Thomas Alva Edison bukanlah ilmuwan pertama penemu bola lampu, loh! Terus, siapa dong penemu bola lampu? Ada banyak nama besar lain di balik penemuan lampu prototipe miliknya. Simak artikel ini sampai habis yuk untuk mengetahui tokoh-tokoh dalam penemuan bola lampu!
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Siapa yang menyangka sebuah bola kaca bersinar bisa merubah peradaban dunia. Yap, lampu menjadi benda yang teramat penting sampai-sampai saat terjadi pemadaman listrik, orang-orang akan menyebutnya ‘seperti mati lampu ya sayang~ seperti mati lampuuu~’ dan bukan ‘mati kulkas’ atau benda elektronik lainnya. Tapi, pernah nggak kepikiran, siapa sih sebenarnya yang menemukan lampu itu?
Umumnya, banyak murid sekolah akan menyebut Thomas Alva Edison adalah penemu bola lampu. Tapi, apa benar begitu? Hmm sebenarnya bisa dibilang benar, tetapi tidak sepenuhnya benar juga, ya.
Sejarah penemuan lampu tidak sesederhana seperti kita menemukan sebuah kunci yang hilang. Pada awalnya, manusia terus mencari alternatif penerangan yang lebih efisien, mulai dari obor, lilin, sampai lampu minyak, tetapi semua penerangan menggunakan pembakaran ini tentunya memiliki beberapa resiko, seperti kebakaran dan bahan baku yang cukup boros.
Perkembangan Sejarah Penemuan Bola Lampu
Sejarah bola lampu itu ibarat bola salju yang berguling, di mana bola salju yang terlihat sekarang merupakan gabungan dari salju-salju kecil sebelumnya. Lampu yang kita gunakan saat ini juga bisa ditemukan karena adanya penemuan-penemuan kecil sebelumnya.
Well, ‘salju’ pertama itu dimulai pada tahun 1800-an, di mana seorang penemu asal Italia bernama Alessandro Volta, berhasil menemukan bahwa sebuah aliran listrik dapat dihantarkan melalui seng, tembaga, kardus, dan air garam dengan menggunakan kawat tembaga.
Lewat aliran listrik ini lah, banyak penemu berlomba-lomba untuk menemukan cara lain agar bisa melihat dalam gelap. Mereka memikirkan gimana ya caranya aliran listrik bisa stabil dan bisa diakses untuk rumah tangga. Belum lagi pada saat itu, sumber listrik hanya berasal dari batu baterai, yang juga sudah cukup mahal.
Humphry Davy (Sumber: Chemistryworld.com)
Salah satunya Humphry Davy, seorang penemu asal Inggris. Pada tahun 1802, ia mengalirkan aliran listrik pada sebuah platinum berbentuk busur yang membuatnya dapat bersinar terang. Nah di sinilah lahir benda elektrik pertama yang digunakan untuk penerangan. Lalu pada 1831, Michael Faraday, muridnya mengembangkan lampu milik Davy dengan skala besar dengan bantuan generator.
Lampu Humphry Davy (sumber:istockphoto.com)
Lampu Davy pada saat itu menggunakan dua buah karbon berdekatan untuk mengalirkan listrik, sehingga menghasilkan cahaya yang terang.
Tetapi, lampu milik Davy itu terlalu terang, cepat terbakar, sangat boros biaya, dan tidak cocok untuk penerangan rumah tangga. Alhasil, lampu milik Davy yang dikembangkan oleh Faraday hanya bisa digunakan di beberapa tempat, seperti persimpangan jalan dan mercusuar.
Baca Juga: Siapakah Penemu Listrik, Benjamin Franklin atau Michael Faraday?
Frederick de Moleyns (Sumber: timetoast.com)
Pada tahun 1840, giliran Frederick de Moleyns, seorang penemu asal Inggris yang berusaha berkecimpung dalam dunia per’lampu’an nih. Bahkan dia yang pertama kali mendapatkan paten untuk lampu pijar.
Dia menggunakan dua buah kawat platina untuk memanaskan karbon bubuk. Dia juga sudah menggunakan bola kaca untuk membuat lampunya lebih bersinar. Tetapi sekali lagi, kawatnya terlalu cepat meleleh, sehingga tidak bisa diakses masyarakat luas karena cukup mahal.
Usaha untuk Menemukan Lampu yang Efisien dan Tahan Lama
Para penemu terus mencari cara bagaimana sebuah kawat tidak cepat gosong saat menghantarkan listrik dengan bahan yang terjangkau untuk dibeli oleh masyarakat.
Hingga seorang ahli kimia dan fisika asal Inggris bernama Joseph Swan mulai mengembangkan penerangan elektrik pada tahun 1860. Dia mulai menggunakan desain lampu dalam bentuk bola yang kedap sebagai usaha untuk mengurangi oksidasi dalam ruang, sehingga dapat mencegah cepatnya pembakaran.
Joseph Swan (Sumber: americanhistory.si.edu)
Swan menggunakan kawat kertas karbon dalam bola lampu kacanya agar lebih murah, tetapi ruang hampa yang dibuat Swan ternyata masih memiliki banyak kekurangan, seperti pencegahan oksidasi yang masih belum efektif dalam meminimalisir pembakaran, sehingga lampunya hanya bertahan beberapa menit saat dipatenkan pada 1878.
Melihat kekurangan tersebut Thomas Alva Edison mulai berusaha memperbaikinya. Pada 1879 Edison dan timnya, menggunakan 6000 percobaan dengan berbagai bahan untuk kawat bola lampu yang tidak cepat terbakar. Hingga sampai pada penggunaan karbon bambu sebagai bahan dasar kawat dengan ukuran tipis yang dirasa cukup efisien dapat mereduksi pembakaran.
Baca Juga: Apakah Benar James Watt Tokoh Penemu Mesin Uap Sebenarnya?
Thomas Alva Edison (Sumber: thought.co)
Edison juga memperbaiki ruang kedap udara pada desain Swan. Alhasil, untuk pertama kalinya, bola lampu bisa menyala selama 600 jam. Bola lampu Edison lah yang menjadi titik awal komersialisasi bola lampu untuk kegiatan rumah tangga. Prototipe inilah yang kemudian terus dikembangkan, hingga sinarnya kita bisa nikmati sekarang.
Jadi siapakah yang menemukan bola lampu? Hmm, menyebut Thomas Alva Edison sebagai penemu bola lampu sebenarnya sah-sah saja, asalkan kita mengetahui dia tidak menemukannya begitu saja seperti menemukan uang di saku celana. Jauh sebelum Edison, gagasan tentang benda terang bertenaga listrik sudah lama dikembangkan oleh penemu hebat lainnya.
Lalu, mengapa nama Thomas Alva Edison yang paling dikenal sebagai penemu lampu pijar? Karena berkat Edison, lampu bisa dijangkau banyak kalangan masyarakat, serta bisa digunakan secara efisien dibanding lilin dan obor. Kehadiran bola lampu di rumah-rumah tentunya merubah banyak hal, seperti kebiasaan manusia, khususnya untuk aktivitas di malam hari.
Sebuah penemuan besar tidak berhenti pada satu waktu saja dan memang ada baiknya sebuah pemikiran atau gagasan itu terus berkembang. Bayangkan saja jika seorang penemu lampu pertama, tidak memperbolehkan karyanya dikembangkan, akan berapa lama lagi kita harus isi minyak tanah untuk lampu minyak.
Baca Juga: Siapakah Penemu Komputer dan Sejarah Perkembangannya?
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Kamu mau nggak jadi penemu hebat seperti Thomas Alva Edison dan lainnya? Sepertinya nggak instan ‘jreng’ langsung jadi penemu, deh. Pasti harus harus rajin belajar dan menemukan guru yang tepat. Kamu bisa nih belajar asik bareng kakak-kakak Master Teacher yang andal dan berpengalaman di aplikasi ruangbelajar. Bersama mereka, dijamin, kamu bakal lebih mudah memahami konsep materi pelajaran!
Referensi:
HISTORY. (2013) ‘Ask History: Who Really Invented the Light Bulb’, Kanal Youtube HISTORY, 6 Desember 2013 [online]. Tautan: https://www.youtube.com/watch?v=-Q4rQDN6Z4s (diakses 1 November 2021)
Blue Apple. ‘Do You Know Who Really Invented The Light Bulb?’, Blue Apple Electric [online]. Tautan: https://blueapplehome.com/do-you-know-who-really-invented-the-light-bulb/ (diakses 1 November 2021)
Britannica, The Editors of Encyclopaedia. ‘Joseph Swan’, Encyclopedia Britannica, 27 Oktober 2021 [online]. Tautan: https://www.britannica.com/biography/Joseph-Wilson-Swan (diakses 1 November 2021)
Sumber Foto:
Library, Science Photo. (2017) Humphry Davy: green chemistry pioneer? [online]. Tersedia di: https://www.chemistryworld.com/opinion/humphry-davy-and-cutting-our-carbon-footprint/2500237.article
Nastasic. (2018) Humpry Davy Lamp [online]. Tersedia di: https://www.istockphoto.com/id/vektor/sir-humphrey-davy-mampu-membangun-lampu-busur-pertama-di-dunia-pada-tahun-1807-gm974721472-265159102
cherylthomas. Frederick de Moleyns [online]. tersedia di: https://www.timetoast.com/timelines/the-invention-of-the-light-bulb (diakses 1 November 2021)
Edison Tech Center. Frederick de Moleyns Light Bulb [online]. Tersedia di: https://edisontechcenter.org/incandescent.html (diakses 1 November 2021)
Tyne & Wear County Council Museums. Lamp Inventors 1880-1940: Carbon Filament Incandescent [online]. Tersedia di: https://americanhistory.si.edu/lighting/bios/swan.htm (diakses 1 November 2021)
Underwood Archives. (1929) Thomas Edison at The Lightbulb’s Golden Jubilee Anniversary Banquet in His Honor [online]. Tersedia di: https://www.thoughtco.com/thomas-edison-1779841 (diakses 1 November 2021)
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<h1 class="content-title">
Apakah Thomas Alva Edison Pencipta Bola Lampu Sebenarnya? </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/galang-kris-nanda" class="">Galang Kris Nanda</a> </p>
<p class="content-info"><span>July 3, 2025 • </span> <span>6 minutes read</span></p>
<br />
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<p><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fakta%20Seru%20-%20Apakah%20Thomas%20Alva%20Edison%20Pencipta%20Bola%20Lampu%20Sebenarnya-01.jpg" alt="Penemu Bola Lampu - Thomas Alva Edison" width="820" /></p>
<blockquote>
<p style="text-align: center; font-size: 16px;"><em>Ternyata, Thomas Alva Edison bukanlah ilmuwan pertama penemu bola lampu, loh! Terus, siapa dong penemu bola lampu? Ada banyak nama besar lain di balik penemuan lampu prototipe miliknya. Simak artikel ini sampai habis yuk untuk mengetahui tokoh-tokoh dalam penemuan bola lampu!</em></p>
</blockquote>
<p style="text-align: center;"><em>—</em></p>
<p> </p>
<p style="text-align: justify;">Siapa yang menyangka sebuah bola kaca bersinar bisa merubah peradaban dunia. Yap, lampu menjadi benda yang teramat penting sampai-sampai saat terjadi pemadaman listrik, orang-orang akan menyebutnya ‘seperti mati lampu ya sayang<span style="font-size: 10px; color: #3c4043;">~ </span><span style="color: #3c4043;">seperti mati lampuuu~</span>’ dan bukan ‘mati kulkas’ atau benda elektronik lainnya. Tapi, pernah nggak kepikiran, siapa sih sebenarnya yang menemukan lampu itu?</p>
<p style="text-align: justify;">Umumnya, banyak murid sekolah akan menyebut <span style="font-weight: bold;">Thomas Alva Edison adalah penemu bola lampu.</span> Tapi, apa benar begitu? Hmm sebenarnya bisa dibilang benar, tetapi tidak sepenuhnya benar juga, ya.</p>
<p style="text-align: justify;">Sejarah penemuan lampu tidak sesederhana seperti kita menemukan sebuah kunci yang hilang. Pada awalnya, manusia terus mencari alternatif penerangan yang lebih efisien, mulai dari obor, lilin, sampai lampu minyak, tetapi semua penerangan menggunakan pembakaran ini tentunya memiliki beberapa resiko, seperti kebakaran dan bahan baku yang cukup boros.</p>
<p> </p>
<h2><span style="font-size: 18pt;">Perkembangan Sejarah Penemuan Bola Lampu</span></h2>
<p style="text-align: justify;">Sejarah bola lampu itu ibarat bola salju yang berguling, di mana bola salju yang terlihat sekarang merupakan gabungan dari salju-salju kecil sebelumnya. Lampu yang kita gunakan saat ini juga bisa ditemukan karena adanya penemuan-penemuan kecil sebelumnya.</p>
<p style="text-align: justify;">Well, ‘salju’ pertama itu dimulai pada tahun 1800-an, di mana seorang penemu asal Italia bernama Alessandro Volta, berhasil menemukan bahwa sebuah aliran listrik dapat dihantarkan melalui seng, tembaga, kardus, dan air garam dengan menggunakan kawat tembaga.</p>
<p style="text-align: justify;">Lewat <a style="font-weight: bold;" href="/blog/medan-listrik-fisika-smp-kelas-9" target="_blank" rel="noopener">aliran listrik</a> ini lah, banyak penemu berlomba-lomba untuk menemukan cara lain agar bisa melihat dalam gelap. Mereka memikirkan gimana ya caranya aliran listrik bisa stabil dan bisa diakses untuk rumah tangga. Belum lagi pada saat itu, sumber listrik hanya berasal dari batu baterai, yang juga sudah cukup mahal.</p>
<p style="text-align: justify;"><img decoding="async" style="width: 480px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/114265_H4040388-Humphry_Davy_British_chemist-SPL.jpg" alt="Gambar Humphry Davy - Penemu asal Inggris" width="480" /></p>
<p style="text-align: center;">Humphry Davy (Sumber: Chemistryworld.com)</p>
<p> </p>
<p style="text-align: justify;">Salah satunya Humphry Davy, seorang penemu asal Inggris. Pada tahun 1802, ia mengalirkan aliran listrik pada sebuah platinum berbentuk busur yang membuatnya dapat bersinar terang. Nah di sinilah lahir benda elektrik pertama yang digunakan untuk penerangan. Lalu pada 1831, Michael Faraday, muridnya mengembangkan lampu milik Davy dengan skala besar dengan bantuan generator.</p>
<p style="text-align: center;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Humphry%20Davy%20Lamp.jpg" alt="Gambar Lampu Penemuan Humphry Davy" width="600" /></p>
<p style="text-align: center;">Lampu Humphry Davy (sumber:istockphoto.com)</p>
<p> </p>
<p style="text-align: justify;">Lampu Davy pada saat itu menggunakan dua buah karbon berdekatan untuk <a style="font-weight: bold;" href="/blog/rangkaian-listrik" target="_blank" rel="noopener">mengalirkan listrik</a>, sehingga menghasilkan cahaya yang terang.</p>
<p style="text-align: justify;">Tetapi, lampu milik Davy itu terlalu terang, cepat terbakar, sangat boros biaya, dan tidak cocok untuk penerangan rumah tangga. Alhasil, lampu milik Davy yang dikembangkan oleh Faraday hanya bisa digunakan di beberapa tempat, seperti persimpangan jalan dan mercusuar.</p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/sejarah-penemuan-listrik" target="_blank" rel="noopener">Siapakah Penemu Listrik, Benjamin Franklin atau Michael Faraday?</a></p>
<p style="text-align: justify;"><img decoding="async" style="width: 400px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Frederick%20de%20Moleyns.jpg" alt="Gambar Frederick de Moleyns" width="400" /></p>
<p style="text-align: center;">Frederick de Moleyns (Sumber: timetoast.com)</p>
<p> </p>
<p style="text-align: justify;">Pada tahun 1840, giliran Frederick de Moleyns, seorang penemu asal Inggris yang berusaha berkecimpung dalam dunia per’lampu’an nih. Bahkan dia yang pertama kali mendapatkan paten untuk lampu pijar.</p>
<p style="text-align: justify;">Dia menggunakan dua buah kawat platina untuk memanaskan karbon bubuk. Dia juga sudah menggunakan bola kaca untuk membuat lampunya lebih bersinar. Tetapi sekali lagi, kawatnya terlalu cepat meleleh, sehingga tidak bisa diakses masyarakat luas karena cukup mahal.</p>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fakta%20Seru%20-%20Apakah%20Thomas%20Alva%20Edison%20Pencipta%20Bola%20Lampu%20Sebenarnya-04-1.jpg" alt="Lampu Frederick de Moleyns" width="600" /></p>
<p> </p>
<h2 style="font-size: 20px;"><span style="font-size: 18pt;">Usaha untuk Menemukan Lampu yang Efisien dan Tahan Lama</span></h2>
<p style="text-align: justify;">Para penemu terus mencari cara bagaimana sebuah kawat tidak cepat gosong saat menghantarkan listrik dengan bahan yang terjangkau untuk dibeli oleh masyarakat.</p>
<p style="text-align: justify;">Hingga seorang ahli kimia dan fisika asal Inggris bernama Joseph Swan mulai mengembangkan penerangan elektrik pada tahun 1860. Dia mulai menggunakan desain lampu dalam bentuk bola yang kedap sebagai usaha untuk mengurangi oksidasi dalam ruang, sehingga dapat mencegah cepatnya pembakaran.</p>
<p style="text-align: justify;"><img decoding="async" style="width: 500px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Joseph%20Swan.jpg" alt="Gambar Joseph Swan" width="500" /></p>
<p style="text-align: center;">Joseph Swan (Sumber: americanhistory.si.edu)</p>
<p> </p>
<p style="text-align: justify;">Swan menggunakan kawat kertas karbon dalam bola lampu kacanya agar lebih murah, tetapi ruang hampa yang dibuat Swan ternyata masih memiliki banyak kekurangan, seperti pencegahan oksidasi yang masih belum efektif dalam meminimalisir pembakaran, sehingga lampunya hanya bertahan beberapa menit saat dipatenkan pada 1878.</p>
<p style="text-align: justify;">Melihat kekurangan tersebut Thomas Alva Edison mulai berusaha memperbaikinya. Pada 1879 Edison dan timnya, <span style="font-weight: bold;">menggunakan 6000 percobaan</span> dengan berbagai bahan untuk kawat bola lampu yang tidak cepat terbakar. Hingga sampai pada penggunaan karbon bambu sebagai bahan dasar kawat dengan ukuran tipis yang dirasa cukup efisien dapat mereduksi pembakaran.</p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/penemu-mesin-uap" target="_blank" rel="noopener">Apakah Benar James Watt Tokoh Penemu Mesin Uap Sebenarnya?</a></p>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Thomas%20Alva%20Edison.png" alt="Gambar Thomas Alva Edison" width="600" /></p>
<p style="text-align: center;">Thomas Alva Edison (Sumber: thought.co)</p>
<p> </p>
<p style="text-align: justify;">Edison juga memperbaiki ruang kedap udara pada desain Swan. Alhasil, untuk pertama kalinya, bola lampu bisa menyala selama 600 jam. Bola lampu Edison lah yang menjadi titik awal komersialisasi bola lampu untuk kegiatan rumah tangga. Prototipe inilah yang kemudian terus dikembangkan, hingga sinarnya kita bisa nikmati sekarang.</p>
<p style="text-align: justify;">Jadi siapakah yang menemukan bola lampu? Hmm, menyebut Thomas Alva Edison sebagai penemu bola lampu sebenarnya sah-sah saja, asalkan kita mengetahui dia tidak menemukannya begitu saja seperti menemukan uang di saku celana. Jauh sebelum Edison, gagasan tentang benda terang bertenaga listrik sudah lama dikembangkan oleh penemu hebat lainnya.</p>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fakta%20Seru%20-%20Apakah%20Thomas%20Alva%20Edison%20Pencipta%20Bola%20Lampu%20Sebenarnya-03-1.jpg" alt="Sejarah Penemu Lampu" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Lalu, mengapa nama Thomas Alva Edison yang paling dikenal sebagai penemu lampu pijar? Karena berkat Edison, lampu bisa dijangkau banyak kalangan masyarakat, serta bisa digunakan secara efisien dibanding lilin dan obor. Kehadiran bola lampu di rumah-rumah tentunya merubah banyak hal, seperti kebiasaan manusia, khususnya untuk aktivitas di malam hari.</p>
<p style="text-align: justify;">Sebuah penemuan besar tidak berhenti pada satu waktu saja dan memang ada baiknya sebuah pemikiran atau gagasan itu terus berkembang. Bayangkan saja jika seorang penemu lampu pertama, tidak memperbolehkan karyanya dikembangkan, akan berapa lama lagi kita harus isi minyak tanah untuk lampu minyak.</p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/penemu-komputer" target="_blank" rel="noopener">Siapakah Penemu Komputer dan Sejarah Perkembangannya?</a></p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;">Kamu mau nggak jadi penemu hebat seperti Thomas Alva Edison dan lainnya? Sepertinya nggak instan ‘jreng’ langsung jadi penemu, deh. Pasti harus harus rajin belajar dan menemukan guru yang tepat. Kamu bisa nih belajar asik bareng kakak-kakak Master Teacher yang andal dan berpengalaman di aplikasi <a style="font-weight: bold;" href="https://www.ruangguru.com/ruangbelajar" target="_blank" rel="noopener">ruangbelajar</a>. Bersama mereka, dijamin, kamu bakal lebih mudah memahami konsep materi pelajaran!</p>
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<p style="text-align: justify;"><strong>Referensi: </strong></p>
<p style="text-align: left;">HISTORY. (2013) ‘Ask History: Who Really Invented the Light Bulb’, Kanal Youtube HISTORY, 6 Desember 2013 [online]. Tautan: https://www.youtube.com/watch?v=-Q4rQDN6Z4s (diakses 1 November 2021)</p>
<p style="text-align: left;">Blue Apple. ‘Do You Know Who Really Invented The Light Bulb?’, Blue Apple Electric [online]. Tautan: https://blueapplehome.com/do-you-know-who-really-invented-the-light-bulb/ (diakses 1 November 2021)</p>
<p style="text-align: left;">Britannica, The Editors of Encyclopaedia. ‘Joseph Swan’, Encyclopedia Britannica, 27 Oktober 2021 [online]. Tautan: https://www.britannica.com/biography/Joseph-Wilson-Swan (diakses 1 November 2021)</p>
<p style="font-weight: bold; text-align: left;">Sumber Foto:</p>
<p style="text-align: left;">Library, Science Photo. (2017) Humphry Davy: green chemistry pioneer? [online]. Tersedia di: https://www.chemistryworld.com/opinion/humphry-davy-and-cutting-our-carbon-footprint/2500237.article</p>
<p style="text-align: left;">Nastasic. (2018) Humpry Davy Lamp [online]. Tersedia di: https://www.istockphoto.com/id/vektor/sir-humphrey-davy-mampu-membangun-lampu-busur-pertama-di-dunia-pada-tahun-1807-gm974721472-265159102</p>
<p style="text-align: left;">cherylthomas. Frederick de Moleyns [online]. tersedia di: https://www.timetoast.com/timelines/the-invention-of-the-light-bulb (diakses 1 November 2021)</p>
<p style="text-align: left;">Edison Tech Center. Frederick de Moleyns Light Bulb [online]. Tersedia di: https://edisontechcenter.org/incandescent.html (diakses 1 November 2021)</p>
<p style="text-align: left;">Tyne & Wear County Council Museums. Lamp Inventors 1880-1940: Carbon Filament Incandescent [online]. Tersedia di: https://americanhistory.si.edu/lighting/bios/swan.htm (diakses 1 November 2021)</p>
<p style="text-align: left;">Underwood Archives. (1929) Thomas Edison at The Lightbulb’s Golden Jubilee Anniversary Banquet in His Honor [online]. Tersedia di: https://www.thoughtco.com/thomas-edison-1779841 (diakses 1 November 2021)</p>
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<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>