Question about Scientific Explorer My First Chemistry Kit
Sorry for not giving you your anwer earlier in "solution 1." At the time, I wasn't sure what you were asking. You were asking "WHY of HOW is air transparent?" I think your question is a very good and thoughtful question, because it's a question that shows you are already aware of some of air's chemical and physical properties. Most people probably take the air around us so much for granted that they have forgotten that they are constantly wading through it every minute of the day.
Well, to anwer your question, there are at least two main reasons why air is transparent and allows us to see through it anything on the other side of it:
1) At the surface of the Earth at 1 atm pressure, air is composed of gas molecules that are individually moving particles that are far apart, that is, having a low density. Most of the visible light just passes between the particles and allows us to see through the air around us. That's probably the simplist explanation of why we can see all the objects around us that are surrounded by clean air, say in a small well-lighted room.
We might become more aware of the air's presence when we try to look at the sun. During the day when the sun is mid-sky during the morning or at noon, we dare not even try, because the air is very transparent to the sun, and the light from the sun would damage our eyes. However, if we look at the sun at near sundown, we can look at and enjoy a glorious sunset. The reason for this difference is because, at noon, we are looking at the sun, whose light rays are passing through mostly very thin air in our upper atmosphere; but at sunset, the sun's rays are passing directly through much more of our atmosphere, that is, going through it sideways, almost parallel to the surface of the Earth. Also it has to pass through the more of the constituents of our air (clouds, water vapor, and dust), whose particles absorb the sun's light.
2) The other reason is that the visible band of light, to which human eyes have adapted, happens to interact very little with atomospheric gases (N2, O2,CO2, H2O vapor, etc). That is, molecules of gas do not appreciably absorb visible light, and thus can pass right through it. We are able to see light being transmitted through or reflected off objects and "see" them even though air is all around them.
When you study chemistry (and also physics), you will learn much more about the properties of gases, about light energy, and about the structure of atoms. Thinking about air and light is a great way to develop your curiosity for the behavior of matter in general! Because of your interest in these topics, you will find your studies of chemistry and physics very rewarding and interesting. Good luck!
Posted on Jan 07, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 14, 2012 | True Refrigerators
on Oct 30, 2015 | Miscellaneous
on Feb 21, 2010 | Computers & Internet
Aug 24, 2011 | Lexmark Optra T610 Laser Printer
May 20, 2011 | Transparent Byki Tagalog Language Tutor...
Oct 23, 2009 | Minolta Di3010 Copier
May 16, 2009 | Canon PIXMA MX310 All-In-One Printer
Oct 06, 2008 | Office Equipment & Supplies
Apr 27, 2007 | Epson Perfection 4990 Flatbed Scanner
196 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: