I could remeber during the 1890’s when I met this friend of mine who contributed a lot to the discovery and explanation of the atom, I call him J.J Thomson๐
J.J Thomson was a physicist who is credited for discovering the
electron.๐ He used his research on cathode ray tube technology in this
discovery.
CATHODE RAY TUBE (stop wondering. Antimony got you)
How does this Tube Work?๐ค
1. Nearly Empty tube (Air has been sucked out)๐
2. An electric charge is passed through the tube. Travels from cathode to
anode๐ฎ
3. The charge is invisible, so to see where it traveled a fluorescent screen is
placed at back of tube. Where the beam hits, a
dot will appear on the screen. You could also use a
fluorescent gas and the whole tube will light up.๐ซ
4. This beam will always travel straight if not
interfered with.๐
5. The deflection coils each have a specific charge.
One is positive and the other is negative.๐ค
6. Thomson showed that
the charge would deflect away from the negative
coil. He then stated that this charge was thus a
negative charge.๐คฅ
J.J Thomson was an excellent physicist and thus did not stop when he had found this negative
charge. Through a series of clever experiments he was able to predict the mass of this charge.
SCIENTIFIC INTERPRETATION AT ITS BEST๐๐๐
He then found out that this charge was 1000 times lighter that a hydrogen atom. He made a bold
statement saying that this negative charge must be inside an atom. This negative charge (he called
corpuscles) later became known as the electron. ( This guy self get time o๐. My devoted friend๐ค
Now let's check the atomic model he postulated.
Using what he had discovered, Thomson predicted what an atom should look
like. These are the key points to Thomson’s Atomic Model: (note this๐ถ
1. Because of its design this model is known as the plum
pudding model๐
2. Each atom is a sphere filled with positively charged
‘fluid’. This resembles the sticky jam part of a pudding.
3. Corpuscles (later called electrons), are the negatively charged particles
suspended in this ‘fluid’. This resembles the plums in the pudding.
4. He did not predict the movement of these electrons๐
Mr thompson was really great. I think HD loves plum pudding. He just gave a nice theory but let's continue the journey down to our present day model.๐ค
By: Oshinowo Testimony
Antimony
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