[Energy] #7 Learning about energy with experiments 1 - Making a light bulb |
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by Eco Generation | 24-04-2020 09:15
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Learning about energy with experiments 1 – Making a light bulb
By Science Columnist Ho-Gwan Ko
American inventor Thomas Edison developed the incandescent light bulb, bringing light to the dark night. However, he was not the first person to invent the bulb. It has been known since the 18th century that a thin metal wire called a filament glows when heated by an electric current. However, it had not been widely used, because it broke too easily or became too hot.
¡Ø This experiment involves heat and smoke. Be sure to practice it with an adult.
What you need: a glass jar with a lid, 8 batteries (1.5V D-type), tinfoil, mechanical pencil lead, alligator clip wires, and tape.
1. Clip both ends of a piece of mechanical pencil lead with alligator clip wires. If the lead breaks easily, wrap both ends with tinfoil before clipping them. Place the lead on the lid of a glass jar.
2. Connect the batteries in series and tape them.
3. Put the glass jar upside-down over the lead and connect the other end of one wire to one pole of the batteries.
4. Connect the other end of the other wire to the other pole of the batteries.
5. Examine as the lead smokes and becomes red. |
2 Comments
Greetings Tunza Eco Generation
I hope you are doing well.
I figured out all the procedures in memory since I don't have all the materials.
It's amazing reading it.
Thank you so much for this report.
Green cheers
Regards
Asmita Gaire
Posted 08-05-2020 15:56
Thank you for one more amazing article on the series.
These are interesting to read and informative too.
Posted 04-05-2020 09:41