I got two light bulbs, they are the same, but one spreads the light with an angle of 45 degrees, while the other 60 degrees.
I have measured their lux from a height of 1 meter, starting right below the light bulb an, then measured again, walking 20 cm to the right, and again at 40 cm and so on. By doing this I was able to measure how well the light bulb spreads the light. Here are the actual measurements.
0 cm 20 cm 40 cm 60 cm 80 cm 100 cm 45° 624 lux 371 lux 82 lux 18 lux 6 lux 3 lux 60° 327 lux 307 lux 152 lux 54 lux 17 lux 7 lux
Now my question, how do I verify that the light volume is in fact the same only spread differently?
I'm thinking about giving each measuring point a value, to help calculate their importance. A lux value at distance of 100 cm, would count more at than at 0 cm.
Hope it's clear what I want. But I'm looking for a way to validate that the two light bulb are in fact sending out the same amount of light, but with different spreads.