My homework speech
Hello, my name is Jun Iwata and today I'd like to talk about Edison and his work to create the incandescent light bulb.
Back ground.
Before this invention, light was only fire. So sometimes it was dangerous. If there were in house, there made cause of fire.
But the first incandescent light bulb's continuous lighting time was only 40 hours because the parts of the light, filament was not so strong.
You have some background information on incandescent light bulb. Now let's look at the focus of Edison's research.
Research Question.
Find the good filament.
Methods and Date
In 1879, Edison conducted an experiment
1, He tried carbon. But it's not good.
2, He collect various items for filament.
3, He try about 2000 items. And in many case, it was failed.
4, The last, he find Japanease bamboo. It was very good for filament. it lighted 600 hours.
Conclusions and Future Research
Edison's work was success. But it was made by many failed. After this experiment, people got safety lights.
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My homework speech
Hello, my name is Jun Iwata and today I'd like to talk about Edison and his work to create the incandescent light bulb.
Background.
Before this invention, the only light was fire. So, sometimes it was dangerous. If it was used indoors, then it could cause a fire.
The first incandescent light bulb's continuous lighting time was only 40 hours because the parts of the light filament were not so strong.
There you have some background information on the incandescent light bulb. Now let's look at the focus of Edison's research.
Research Question.
Find a good filament.
Methods and Date
In 1879, Edison conducted an experiment
1. He tried carbon, but it wasn’t good.
2. He collected various materials for the filament.
3. He tried about 2000 items. And in many cases, they failed.
4. Finally, he found Japanese bamboo. It was very good for the filament. it stayed alight for 600 hours.
Conclusions and Future Research
Edison's work was a success. But it was made after many failures. After this experiment, people got safer lights.
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