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Helium - College Essay

Helium

Who Discovered it?

When and Where was it Discovered?

On August 18th, 1868, a French astronomer named Pierre Janssen was looking at a solar eclipse when he saw a big bright yellow line. At first, he thought that the line was sodium.

Then, in October, 1868, an astronomer from England named Norman Lockyer saw the same yellow line and he also thought it was sodium. According to Lockyer, sodium already has two lines, D1 and D2, so he named this new line as D3 Fraunhofer line. Later on, he decided that the line wasn’t sodium and that it wasn’t any known object from earth either.

Both Lockyer and a chemist from England named Edward Frankland, named the unidentified object as ...

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a bright yellow line. Considering the possibility, he showed his experiment the same isolated gas to Norman Lockyer and Edward Frankland. After different examinations, both Lockyer and Frankland identified the gas as helium.

Where is it found in Nature and in What Form?

Helium was originally found on the sun by many chemists at different times. It took them a while to figure out that it was helium. Helium was first identified to be in the form of a gas when it was found on the ...

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Helium. (2011, May 8). Retrieved November 23, 2024, from http://www.essayworld.com/essays/Helium/98980

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PAPER DETAILS

Added: 5/8/2011 05:23:48 PM
Submitted By: ElenaDeLuigi
Category: Science & Nature
Type: Free Paper
Words: 289
Pages: 2

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