Brain Teasers
Brain Teasers Trivia Mentalrobics Games Community
Personal Links
Submit a Teaser
Your Favorites
Your Watchlist
Browse Teasers
All

Cryptography
Group
Language
Letter-Equations
Logic
Logic-Grid
Math
Mystery
Optical-Illusions
Other
Probability
Rebus
Riddle
Science
Series
Situation
Trick
Trivia

Random
Daily Teasers
Search Teasers

Advanced Search
Add to Google Add to del.icio.us

More ways to get Braingle...

What Time Is It?

Science brain teasers require understanding of the physical or biological world and the laws that govern it.

 

Puzzle ID:#33012
Fun:*** (2.52)
Difficulty:* (0.89)
Category:Science
Submitted By:vbguy101*us****!

 

 

 



In the year 2100, a family went out into space for a vacation exactly one light-minute away from home. They used an advanced telescope to look at their clock. The child, Sam, was so exact at time. If it's 9:59, he stays up one minute until ten. One night, Sam looked through the telescope and saw the clock showed 9:59. But his dad said it was ten and he had to go to sleep. How is that possible?

The clock back at home was their ONLY time source.



Answer

The clock was one light-minute away, so it took the light one minute to reach the telescope. The display was how it looked one minute ago. You have to add one minute, and therefore it was Sam's bedtime.
Hide




What Next?

  
  

See another brain teaser just like this one...

Or, just get a random brain teaser

If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.

 






Back to Top
   



Users in Chat : Cereal_Killer 

Online Now: 8 users and 555 guests

Copyright © 1999-2014 | Updates | FAQ | RSS | Widgets | Links | Green | Subscribe | Contact | Privacy | Conditions | Advertise

Custom Search





Sign In A Create a free account