English
English, 21.06.2021 21:30, angelespinosa521

Historic Inventions by Rupert S. Holland (adapted excerpt)

Humphrey Davy invented the safety-lamp that helped protect miners from the perils of flammable fire-damp1.

Explosions of coal-gas were only too common in the mines of England, leading to detrimental effects on those who labored underground. The biggest mine-owners met to see whether some protection against such accidents could not be devised. After much discussion, they appointed a committee to call on Sir Humphrey Davy and asked him to investigate the possibilities for them.

He took up the question, experimented with fire-damp, and found that it was in reality light carburetted hydrogen. He visited many mines and took into careful consideration the conditions under which the men worked. For months he investigated and experimented, and in 1815, he constructed the safety-lamp. This was an oil lamp, which had a chimney or cage of wire gauze that kept the flame of the lamp from passing through and igniting the fire-damp outside. The cage allowed air to pass and light to escape. Even if the combustion of the fire-damp caused the wire gauze to become red hot, it was still efficient as a safety-lamp.

1. a combustible gas especially methane
6
Select the correct answer.
Which statement best describes the writer's purpose?
A.
to persuade
B.
to entertain
C.
to instruct
D.
to inform

answer
Answers: 3
Get

Other questions on the subject: English

image
English, 20.06.2019 18:04, tobyhollingsworth178
In "the notorious jumping frog of calaveras county" wheeler tells the story of smiley and his frog with a fierce earnestness. what is it about wheelers retelling of the frog-jumping contest that makes the story so humorous?
Answers: 2
image
English, 21.06.2019 18:30, hannah5143
Read the excerpt from “the railroad earth.” o well anyway i'll be learning eventually to like the railroad and sherman will like me some day, and anyway another day another dollar. the narrator of this excerpt can best be described as friendly. optimistic. wealthy. intelligent.
Answers: 1
image
English, 22.06.2019 01:10, nally6636
2points which popular story includes the archetype of a character that begins as an underdog, but eventually wins against all odds? o a. the wizard of oz o b. the odyssey o c. the myth of romulus and remus o d. jack and the beanstalk
Answers: 1
image
English, 22.06.2019 03:50, lewislatavia043
What about the sentence structure in this passage build suspense​
Answers: 3
Do you know the correct answer?
Historic Inventions by Rupert S. Holland (adapted excerpt)

Humphrey Davy invented the s...

Questions in other subjects:

Konu
Social Studies, 09.01.2020 10:31
Konu
Mathematics, 09.01.2020 10:31
Total solved problems on the site: 13569531