Haw do triple glazed glass be better than double glazed?

Question: Haw do triple glazed glass be better than double glazed?
- Keywords:
  glass,
  glaze,
  window
Asked by harry4 to Cathy, Mark, Roma on 27 Jun 2014.
- Roma Agrawal answered on 27 Jun 2014:
  
  Double glazed glass has a layer of air at low pressure between the two panes of glass. This helps stop sound and cold air from travelling through.
  Triple glazed glad has two layers of air so it acts even better at stopping cold and noise!
  Great question!
- Cathy Fraser answered on 27 Jun 2014:
  
  Hi Harry
  
  As Roma says – it’s because there’s another layer of insulation between the cold/noice outside and the warm/quiet inside.
  Other pros are that they’re meant to be harder to break (so would add to home security) and with the house being kept warmer by the insulation it should cost less to heat!
- Mark Greaves answered on 27 Jun 2014:
  
  I see the ladies have covered this one.
  Also modern windows can have refelective coatings applied that reflect heat there by keeping it outside rather than in.

Question: Haw do triple glazed glass be better than double glazed?