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2014-07-22 Astronomy - Cameras:

It's true that the main thing that keeps us from seeing stars in the city is simply all the lighting. Back when the Northridge quake occurred (that's probably the one you heard about), the police received

2014-07-21 Entomology (Study of Bugs) - Bug:

Dear Julia - This is the empty 'shell' (exuvium) of a dragonfly naiad (nymph). When a dragonfly naiad (the immature aquatic stage) completes its development, it leaves the water to crawl up on some object

2014-07-21 Entomology (Study of Bugs) - Mystery bug:

Hi Jim     I am sure these are beetles and most beetles make up the most species of the insects so Without seeing one of these all I can do is narrow it down. Since they were on materials I suspect they

2014-07-21 Entomology (Study of Bugs) - What is this?:

Marquita,    I believe this is a very small (young) firebrat (see for pictures). These insects are mostly harmless except they can sometimes damage

2014-07-21 Physics - Dimensions:

A line is a geometric object.  Length is a quantity.  A surface is another geometric object, so is a plane.  Width is a quantity (a linear quantity).  Spheres and cubes are again geometric objects, and


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