Best Lighting for Reading: Tungsten vs. Tube Lights & Recommended Wattage

Question
Doctor R Borucki,

Recently i m reading alot due to my studies. I m quite concerned about the light i m using while i m reading.

Whats the best type of light, tungsten or tube light?  Is there a minimium wattage?

At the moment I am using a 40 w tungsten bulb lamp.

Thanks for your time.

Answer
There isn't a min amount... people used to think you would damage your eyes; basically, the minimum amount necessary that works.... the only caveat is sunlight... protecting your eyes against UV radiation... there is minimal to no UV radiation from artificial lighting.  Hope this helps...