1. I have made a theoretical discovery in my studies. It concerns vibrations of frame of reference i...(more)
  2. Against the black plastic on my TV, dust looks white; when I wipe it off with a white tissue, dus...(more)
  3. My brother and I have a very important bet and it is about the following: If you remove the elect...(more)
  4. I have a small laser pointer. The spot produced by the beam is not a solid red circle, but a fuz...(more)
  5. How many satellites orbit the earth? How many are used for weather forecasting? And what is the m...(more)
  6. My question concerns the latest news about the Cosmological Constant. Has it now been established...(more)
  7. Have you ever hit the top of a glass juice bottle with your fist. It makes a very loud cracking s...(more)
  8. I am doing a research project on the strength of different batteries. Is there a cheap way to te...(more)
  9. Why does a digital camera need a shutter- I think it should be able to electronically shunt the i...(more)
  10. Is it possible for a singularity to form outside a black hole? (more)
  11. Why rainbow is a bow? (more)
  12. I have spent 4-5 hrs. attempting to magnetize some iron (Fe) washers using a 12V battery and insu...(more)
  13. What is the heat wanted to melt the hardest substance in the world? (more)
  14. Is it possible to reach a black hole? What is the distance of the nearest black hole from earth? ...(more)
  15. Could you explain the idea that gravity could be thought of a depression or well, much like when ...(more)
  16. If you shine a light through a glass of water, the light slows down. What makes it speed up again...(more)
  17. Can you explain the formula for computing the hydrogen burning lifetime of a star with 15 solar m...(more)
  18. What kind of weather is on Mercury and Saturn? Does it rain or snow on these planets? (more)
  19. How are rocks made? What are the different kinds of rocks? (more)
  20. How can planetary angular momentum be tranferred from one body (Earth's rotation) to another (Moo...(more)