How strong is a light house light in candles I think?

Question

I know that you measure the strength of a light in candles.

Answer 1

It's several million, but it is the lens and reflector that do all the work.

Light is measured in lux or illumination is, candle power is the equivalent of Mega Tonnes when measuring nuclear yield.

You may find something here
http://hypertextbook.com/facts/2005/DariaZainullina.shtml

Some have 1000Watt bulbs which is only 10 times more than my bathroom light bulb.

Answer 2

It changes.
Light on the working plane is the answer and as that increases so does the power need.
If your target is five miles out then that is where its powered for, not forgetting light falls off at a rate equal to the square of the distance.
Don't forget to make the light source higher than the curvature of the earth either.
Paul J
Candle power is the strength of a light in candles, wax candles. One candle = I Candle Power
The measurement existed before electricity was made available to the masses.
The first Atom Bomb's light intensity was so rated after experiments during and after the war.

Answer 3

Some light houses use bulbs as small as 60 watts,its the lens and reflector that cast a beam.A 12v 10w bulbIn non reflective lamp,at a hieght of 2mtr can be seen 7/8 miles away.

Answer 4

http://en.wikipedia.org/wiki/Lighthouse

This article tells a whole lot about them, but does not specificly tell the candle power. Another light measure is lumens. GE may be able to answer if emailed.

Answer 5

the central part of flame is at a temperature of around 3000 degrees

Answer 6

http://en.wikipedia.org/wiki/Eddystone_Lighthouse

doesn't help you much but I think it's interesting anyway.