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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 they were in house, they 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 collected various items for filament.
3, He tried about 2000 items. And in many case, it was failed.
4, The last, he found 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.0 votedOctober 12, 20170ips cells
英語の宿題です。添削お願いします！Shinya Yamanaka succeeded in making iPS cells in 2006. ES cells had already existed as universal cells before iPS cells were created.
However ES cells have an ethical problem. Since ES cells are cells that have been taken out by breaking embryos, they are thought to be a research to pick up the buds of life, and criticism is also persistent.
And another problem is the refusal to recognize non self. IPS cells solved the problem of such ES cells.
Because iPS cells are created by removing the differentiated cells from the body, no ethical problems arise. In addition, because the cell of the patient itself can be used, no rejection reaction occurs.This sentence is too long, so I think that it is better to shorten it.
0 votedOctober 9, 20170ips cells
英語の宿題です。添削お願いします！Shinya Yamanaka succeeded in making iPS cells in 2006. ES cells already existed as universal cells before iPS cells were created.
However ES cells have an ethical problem. Since ES cells are cells that have been taken out by breaking embryos, they are thought to be a research to pick up the buds of life, and criticism is also persistent.
And another problem is the refusal to recognize non self. IPS cells solved the problem of such ES cells.
Because iPS cells are created by removing the differentiated cells from the body, no ethical problems arise. In addition, because the cell of the patient itself can be used, no rejection reaction occurs.
0 votedOctober 9, 20170- すみません(><)急ぎです!添削してもらえると助かります! Hello my name is ~~~ and today I’d like to talk about Thomas Alva Edison and his invention, the incandescent filament lamp. In 1878, Edison began working on a system of electrical illumination, something he hoped could compete with gas and oil based lighting. He began by tackling the problem of creating a long-lasting incandescent lamp, something that would be needed for indoor use. His serious incandescent light bulb research began in 1878, filing his first patent later that year…”Improvement In Electric Lights” in October 1878. His experiments involved the fabrication and testing of many different metal filaments, including platinum. You have some background information on incandescent filament lamp. Now lt’s look at the focus of Edison’s research. Research Question How can I light the lamp for a long time? Methods and Data In 1879, Edison conducted an experiment. 1.Edison returned to a carbon filament. 2. He successfully tested a filament that burned for 13.5 hours. 3.He continued to improve this design and used a carbon filament or strip coiled and connected to platina contact wires 4.This was the first commercially practical incandescent light. Conclusions and Future Research The incandescent filament lamp is perhaps the most celebrity invention ever given to Edison. Even people who are disadvantaged were able to light the lamp by mass production of filament lamp.October 9, 201720
