Feel free to ask a question about the science behind daily phenomena or everyday technologies. We are collecting questions to answer in future articles. After you submit a question, it will be reviewed and published within a few days.

You can also give short answers to questions posed by other readers.

avatar Seabird
+1
 
 
When I am at the sea, I always ask myself, why the sun reflects on the water pointing directly towards me, no matter where I am standing. I could take two pictures from different points at the same time and the shining stripe on the water would be different in both pictures. Why that?
Wednesday 28 September 2011, 09:37
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar ANKUR
+1
 
 
This occurs because of two reasons. The first is the size of sun is very very large and the second is the rays coming from the sun is uniform for local area. So irrespective of the local distance you will get the same intensity and that is why whenever you stand, you will see the sun pointing toward you only.
Thursday 26 July 2012, 08:54
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar S+L
0
 
 
Geht die Sonne tatsächlich genau im Westen unter? Um wieviel Uhr steht sie im Westen?
Wednesday 28 September 2011, 22:28
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar Rob
0
 
 
Where do auroras come from?
Wednesday 25 January 2012, 21:04
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar Dr. Ankur
+1
 
 
Aurora is basically a phenomenon in the dark night sky at the poles of the Earth which is due to the incidence of highly energetic charged particles like Electrons, protons etc. from the space in to the Earth's magnetic field. Moreover, this occurs only at poles of the Earth because our planet works like a magnet having both north and a south pole. So Aurora is basically due the interaction of charged particle with the Earth's Magnetic field.
Thursday 26 July 2012, 09:01
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar Elmar
0
 
 
I just want to add, that the magnetic filed is less protective near the poles. So more particles from the sun can reach the earth's atmosphere. When these particles hit the oxygen in the atmosphere the oxygen glows greenish.
Friday 17 August 2012, 18:30
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar Sarah
0
 
 
How does a monitor work?
Tuesday 31 January 2012, 22:27
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar Pete
0
 
 
Why can ships made out of steel swim?
Wednesday 01 February 2012, 19:30
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar Elmar
0
 
 
The answer is in the article "Why can heavy steel ships float?" You find this in the section "Articles" under "Physics".
Thursday 24 May 2012, 22:15
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
avatar Ozzy
0
 
 
How Are Bridges Held Steady??
Friday 05 October 2012, 05:42
Post Reply
Name *
Code   
ChronoComments by Joomla Professional Solutions
Submit Comment
Cancel
Name *
CODE (the black letters, not the grey ones)   
ChronoComments by Joomla Professional Solutions
Submit question