Go to Home Page
You are here
Go to Reference Section
Go to Directories Section
Go to Community Section
Go to Fun Section
Go to Science Store
Go to About PhysLink.com
Club PhysLink
   Not a member yet?
   Get Free Membership
    Remember me
   Forgot your login?
Top Destinations Menu
 Ask the ExpertsAsk the

 Physics and Astronomy Departments DirectoryUniversity

 Discussion ForumsDiscussion

 Online Chat Online

 FREE Einstein eCardsEinstein

 PhysLink.com Science eStoreScience


Chikrii Word2TeX Software

Click here for a free 2-week trial

Become a Sponsor

  Gregory Ogin: PhysLink.com Expert

Gregory H. Ogin
Gregory H. Ogin
Undergraduate Student
UST, St. Paul, MN
Questions answered
to date:


Gregory H. Ogin was born in 1982 in Kailua-Kona, on the Big Island of Hawaii. He graduated from Konawaena High School in June 1999. He is currently an undergraduate student at the University of St. Thomas in St. Paul, Minnesota, where he is pursuing degrees in Physics, Mathematics, and Electrical Engineering. Some day he even plans on graduating, after which he will likely pursue a Ph.D. in physics. Greg enjoys taking physics/math/EE classes, although he dislikes homework just as fervently as the next person. Some of his other hobbies include playing tennis (he's on the university's Division III tennis team), and playing classical piano. His all-time favorite composer is Chopin. Greg's work experience includes lots of math and physics tutoring, as well as the design and synthesis of a small, cost-efficient high voltage power source for low current applications (e.g. electron beam optics). The following is a link to the UST Physics Department's website: http://www.stthomas.edu/physics

Published Answers

All answers by Gregory H. Ogin published at PhysLink.com up to date are listed here:

  1. What is an electronic ark?

  2. How is carbon dating done?

  3. Is there any gravitational force between two photons?

  4. What is the equivalent of 1 Lux unit in Watts?

  5. There are two persons in a plane which is traveling at a speed greater than the speed of sound. If one of them talks, will the other hear it?

  6. If I am standing on a mountain, Am I going faster than someone at sea level? If so, is my day shorter or will the higher vantage point of the horizon allow my day to seem longer?

  7. How much heat per hour do humans dissipate?

  8. Is it possible for a single photon to produce diffraction pattern?

  9. How is force related to momentum?

  10. What is it aliasing? When it occurs?

  11. If a visible laser on the earth is shone on the moon and the beam is moved along the surface, could the beam spot on the moon be made to travel faster than the speed of light?

  12. What is a light-year and how long is 1 light-year?

  13. Is it possible to slow light down?

  14. I have often read that scientists are searching for the next prime number. My question is why? What use is it? How can knowing the next highest prime number be of any benefit?

  15. Why does space shuttle fly up with its belly upward and its back downward (i.e., astronauts sitting upside down)?

  16. How do liquid crystal displays (LCDs) work?

  17. Why is it dangerous to look at the solar eclipse directly specially at that moment?

  18. What is the hottest part of the Sun?

  19. How does a laser cool something, as in producing a Bose-Einstein condensate?

  20. How long did radio commands take to travel from the Earth to Voyager as it passed Neptune?

  21. How does the atomic clock change to daylight savings does stop and than catch up or does it go forward?

  22. If I carve out a perfect sphere out of a bar magnet, how will it choose a north and a south pole?

go to the top  

All rights reserved. © Copyright '1995-'2004 PhysLink.com