Light distance

[JeisonBR]

Hello all!

Sorry if it's the wrong area but this seems to be the most logical to post my question.

I want to know if a light source, like a compact fluorescent bulb loses lux or intensity as you go more and more away from the source (direct under the bulb), and if so, how can I measure it without a light meter (luximeter) if I can, because it's too expensive for me to buy it right now. A formula would be great if, again, it exists, like for example 1m away from a 40w fluorescent bulb you lose 10% light/intensity/lux, etc or something like that.

I searched this everywhere and couldn't find it, mainly because I don't know how to phrase it to Google or whatever and I'm not a master at light and bulbs and whatnot xD.

Thanks in advance!

 

[peachdejour]

Okay. We know that the speed of light would not change. We know that a single light bulb cannot light an entire large room, so it would be a logical hypothesis to say that they would loose intensity as it is moved from the object. I suppose you would google something like "manual way to calculate the intensity of a light bulb light." You would probably need to know wattage and distance in the very least. I hope this points you in the right direction.