DIYbanter - View Single Post

In uk.d-i-y wrote:
WM wrote:
Here in the UK, at my local Tesco supermarket I saw some GLS bulbs
which has a glass envelope that were slightly smaller than usual.

What's the idea behind this?

Wouldn't a 100W filament make a smaller bulb glass envelope get
hotter than the larger standard envelope.

And therefore wouldn't this make the life shorter?

It reduces the amount of material used, and the energy needed to
produce that material. It also reduces the amount of energy used in

And increases the possibility of fires.
I _think_ that given a constant life - that the bulb will be less
efficient.