Foot Candles.

You can also use the light meter in your automatic camera: set the film speed to 100 and the shutter speed to f4. Place a matt white card where the plants will be. With the lens focused on the card only, note the shutter speed. If it indicates 1/250, you have about 250 footcandles, 1/500 equals about 500 footcandles, and so on.

 

Study of Holocaust survivors finds trauma passed on to children's genes

Study of Holocaust survivors finds trauma passed on to children's genes 

 

http://gu.com/p/4byz9?CMP=Share_AndroidApp_E-mail