Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How does UV light pass a glass bulb?

  1. Jan 15, 2011 #1
    Hi!
    A classic example in order to demonstrate the Photoelectric Effect, is to charge a metal plate (by electrons) connected to an electroscope and observe how the charge decreases when lightning by UV light. When put a pane of glass in front of the metal plate, we observe that the charge remains constant, i.e the high energy photons from the UV lamp do not pass the glass. But how do the high energy photons pass the lamp bulb, made of glass?
     
  2. jcsd
  3. Jan 15, 2011 #2
    After some research through internet I found out they use quartz glass instead of normal one so the UV light can pass through it.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook