On 22/8/2012 5:37 AM, Robert Baer wrote:
Jalil - Natural Systems wrote:
On 21/8/2012 5:50 AM, Spehro Pefhany wrote:
On Tue, 21 Aug 2012 04:59:00 +0800, Jalil - Natural Systems
wrote:

On 30/7/2012 7:53 AM, Jim Thompson wrote:
Loony Question for Today...

Which produces more HEAT, a 40W Incandescent, or a 40W Halogen bulb?

...Jim Thompson

Heat is Energy , measurable in Watts,

The W is a unit of power (energy per unit time), not energy.

No free beer for you.

From Kiwi :-
The watt (play /ˈwɒt/ WOT; symbol: W) is a derived unit of power in the
International System of Units (SI), named after the Scottish engineer
James Watt (1736€“1819). The unit, defined as one joule per second,
measures the rate of energy conversion or transfer.

okay, so we have Joules per Second (J/s). And i suppose X seconds of 40W
of Incandescent is not equal to X seconds of 40W of Halogen ?

Hurry up with the free beer :;


The Halogen lamps are roughly 100% more efficient - same illumination
for half the consumed power.
Aw c'mon.The question was which of them produces more HEAT !, not which
is more efficient !

In a closed system, obeying laws of conservation of energy, i.e. no heat
losses, that would translate into exactly the same amount of HEAT.

Pah! It's awful what one has to go through just for a free beer nowadays !