On 1/5/2015 5:42 AM, mike wrote:
On 1/4/2015 7:37 PM, Jeff Liebermann wrote:

100 watt incandescent bulb on a desk lamp? Doesn't that get rather
warm and possibly hot enough to shorten the life of the bulb?

By how much?
What's the added surface temperature?
Add that to the filament temperature.
What's the percentage increase in filament temperature?

More likely, it shortens the life of the phenolic socket and switch.


Phenolic socket? Dear me, you need to get a better class of lamp.
The Luxos are all ceramic and metal, with glass fibre sleeves on the
wiring and two layers of air-spaced metal shield between the bulbs and
the switches.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net