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What would happen if I drilled a small hole in a cathode ray tube television screen?
I know basically what's going on inside the picture tube: the vacuum tube is shooting electrons at the phosphor-coated screen. I also know that when you disconnect the high-voltage plug at the top of the tube, the electron beam loses its focus. So I was wondering if I could drill a small hole in the screen to make a home-made electron gun for science experiments? What worries me is a sticker on the tube that says "implosion protection". What does that mean?
Implosion means exploding inward. The tube will probably implode if you drill a hole in it because it contains a vacuum and is therefore under heavy pressure from the atmosphere. The only thing supporting the tube against that pressure is the strength of the walls. When you drill the hole you weaken the walls and they collapse under the pressure of the atmosphere.
Even if the tube didn't implode it probably wouldn't work well as an electron gun because the tube would now be full of air. The molecules in the air would scatter the electrons and prevent them from going very far.
 Tooluxe 13-Piece Hex Shank Titanium Coated Drill Bit Set List Price: Sale Price: $4.36 You save: $15.63 (78%)  Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionLight duty uses titanium drill bit set for home and office use. Drill bit made with high speed steel coated with titanium nitrate for longer life. Features with a quick change 1/4-inch hex shank. Comes with the most popular sizes: 1/16, 5/64, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64 and 1/4-inch...  |
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 Milwaukee 48-89-1105 1/16-to-1/2-Inch Titanium-Coated 20-Piece Twist Drill Bit Assortment List Price: Sale Price: $26.96 You save: $21.94 (45%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionThe Milwaukee 20-piece 1/16-inch to 1/2-inch titanium-coated twist drill bit assortment in plastic index features 3-flat no-spin shanks on 13/64-inch and larger, a 135-degree split point, and a titanium coating that withstands high temperatures, reduces friction and increases wear resistance... |
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 Mibro 871490 Titanium Coated Extra Life Drill Bit and Super Masonry Drill Bit Set, 17-Piece List Price: Sale Price: $13.21 You save: $0.78 (6%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionThis 12-Piece Super Masonry drill bit set from Mibro - a 60 plus year old company selected as one of Canada's '50 Best Managed Companies' contains two 1/8-Inch, two 5/32-Inch, two 3/16-Inch, three 1/4-Inch, 5/6-Inch, 3/8-Inch and 1/2-Inch masonry drill bits... |
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