Best Answer

1 lumen = 1 candela per steradian.

1 candela = 1/683 watts per steradians (assuming 540nm light wavelength).

Assuming that the light is collected from a single steradian:

1 Lumen = 1 Candela -> = 1/683 Watt -> Watt = 683 Lumens

1 Joule = 1 Watt per Second -> Watt = Joule/Second


683 Lumen = 1 Joule/Second

Under the above assumptions1 Lumen = 1/683 Joule/Second
User Avatar

Wiki User

โˆ™ 2012-09-13 19:31:06
This answer is:
User Avatar
User Avatar

wesam salih

Lvl 1
โˆ™ 2022-08-11 14:08:05
Helpful answer thanks
User Avatar

Sasuntidictous Rhoir...

Lvl 1
โˆ™ 2022-11-27 17:00:15
1 lumen = 1 candela MULTIPLIED BY a steradian, not divided by.
Study guides


17 cards

Which of these is a characteristic of nonmetals

What is the only factor needed to calculate change in velocity due to acceleration of gravity 9.8 ms

What term is used to describe splitting a large atomic nucleus into two smaller ones

Which type of reaction is the burning of gasoline to release heat energy

See all cards
304 Reviews

Add your answer:

Earn +20 pts
Q: How many lumen are in 1 Joule?
Write your answer...
Still have questions?
magnify glass
People also asked

Cost of a seed drill in 1701?

View results

What song is playing when Ichigo fights Shinji in Bleach episode 122?

View results

What is the medical term meaning wasting?

View results

Is randy bullock of Houston Texans related to Sandra bullock?

View results