Crystal Radios and Followups - Physics Forums
2024年9月22日 · 2) As a boy, I built a crystal set with enameled magnet wire wound on a toilet paper tube and held in place with airplane glue (toxic stuff, probably can't buy it anymore). The tube was nailed horizontally to a piece of wood and I …
Anyone know how to make super glue - Physics Forums
2007年4月12日 · 3. What is the best way to apply super glue? The best way to apply super glue is to first clean and dry the surfaces to be bonded. Then, apply a small amount of glue to one surface and press the two surfaces together for 10-30 seconds to allow the bond to form. It is important to avoid getting super glue on your skin as it can cause irritation ...
Crystal Radios and Followups | Page 2 - Physics Forums
2024年9月22日 · 34,838. 21,512. There are some very nice ribbon cables out there. You can get them with every 3d wire grounded, and you can get them as multiple twisted pairs in a common shield and jacket. Getting them rated to 100 MHz is trivial, and 300 MHz if you spend some time with catalogs. My point, is that sometimes the best choice is the one you will ...
What adhesive is suitable for gluing steel and G10 material?
2024年2月23日 · Sand the surface of the G10, coat with epoxy, then assemble. 2) A high performance adhesive, such as 3M 5200 or Surebond SB-190. I have used both, and they really stick to steel and most other materials. In either case, I would seal the surface with a coat of paint after the adhesive is fully cured.
Isolation box to measure light source inside (closer to visible light)
2024年9月27日 · They are typically wood. You will need to block light from every single crack. This means come combination of foam (styrofoam) plastic right angle brackets, RTV and electrical tape on the edges and corners, and some kind of "plug" at the top. The inside should be painted flat black and covered in black felt.
What sci-fi movie and book technologies will never be a reality?
2024年8月22日 · 492. Clarke's Three Laws caution: When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong. The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
What happens when a pressurized gas cylinder falls over?
2015年3月6日 · Yes, it is highly likely that the gas will leak out of the cylinder. When the cylinder falls, it can damage the valve or other parts of the cylinder, causing the gas to escape. This can be dangerous, as the gas can be flammable or toxic. 2.
Understanding Superposition Physically and Mathematically
2019年6月10日 · Quantum Mechanics: In quantum mechanics, superposition refers to the ability of quantum systems (such as particles) to exist in multiple states simultaneously. According to the principle of superposition, a quantum system can exist in a linear combination of its possible states until observed or measured. This concept is often exemplified by ...
How can I avoid Foaming in my cutting fluid tank? (attached …
2024年9月22日 · 1) Have the recovered coolant drain into the small tank to de-gas. 2) In the small tank, install a float valve that drains into main tank only. when there is a substantial oil level. small tank. could be to use the height difference between the small & large tanks. that it is always submerged in the main tank.
A ball bounces off a brick wall, Find the average acceleration
Nov 4, 2018. Acceleration Average Average acceleration Ball Motion in 1d Wall. In summary, the problem involves a 50.0-g super ball traveling at 25.0 m/s that bounces off a brick wall and rebounds at 22.0 m/s. The ball is in contact with the wall for 3.50 ms. The magnitude of the average acceleration can be calculated using the formula a_avg ...