Recent content by otterandseal1

Where the line meets the first plane

Could I use the vector from part a? and the normal of the first plane?

Could you possibly show me the working for the question please?

is that using r.n = a.n ?

Is the normal (2,-1,-3)?

In irradiance experiments, why is a black sheet placed underneath the light meter and the light bulb?

Sorry just to double check 1/d^2 is not the same as the square of the distance is it?

Is the symbol 1/d^2 the square of a distance then? So if I said as the distance from a point source increases, the irradiance decreases, would this be an effective conclusion of the inverse square law?

Yes, but sometimes it refers to the distance between a source of light and then generally the square of the distance. Are they the same things? If it's more helpful, the inverse square law is the square of the distance is inversely proportional to irradiance/illuminance. What does the square of...

Its to do with irradiance, I see textbooks saying "distance increases will result in irradiance decreasing" and "irradiance is inversely proportional to the square of the distance" What is the distance between the two? Sorry if I was too vague.

Its to do with irradiance, I see textbooks saying "distance increases will result in irradiance decreasing" and "irradiance is inversely proportional to the square of the distance" What is the distance between the two? Sorry if I was too vague.

What's the difference between distance and the square of the distance? Many Thanks

Can a graph of voltage or current on the y-axis over distance represent the inverse square law?

I don't have it with me. It's measured in lux. there's a knob that turns to 2, 20, 2000, 20000