In this video we'll be looking at how to calculate light levels using a combination of the inverse square law and the cosine rule for lighting. We also consider how to calculate light levels when more than one source of light is being used. This is the type of question that you may have to complete for an exam.
Click this link to view the worksheet:
[ Ссылка ]
Time Stamps:
00:00 Lit Intro
02:43 Inverse Square Law
05:09 Cosine Rule for Lighting
07:28 How Pythagoras Fits in
09:51 Finding the Cosine of Theta
12:34 Check Your Answer
13:02 Second Half of the Answer
These videos are aimed at learners studying electricity on any course and will help those studying the City and Guilds 2365, 5357 Apprenticeship, 7202 and 8202 courses as well as the EAL Diploma in Electrical Installation.
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