Lightbulb problem #2

There is a room without any windows, with 3 lightbulbs on the ceiling, each lightbulb can be put on or off with a switch. But the 3 switches are outside the room.
You will have to find out which switch is connected with which lightbulb, but you can only use the switches while the door is closed, further more you may only open the door only once.
How can you make sure which switch is for witch lightbulb?

Originally posted by gonnawhoopyourass
There is a room without any windows, with 3 lightbulbs on the ceiling, each lightbulb can be put on or off with a switch. But the 3 switches are outside the room.
You will have to find out which switch is connected with which lightbulb, but you can only use the switches while the door is closed, further more you may only open the door only once.
How can you make sure which switch is for witch lightbulb?

By asking the Schrodinger's cat? What kind of lightbulbs are we dealing with exactly?

Originally posted by GinoJ
You can't.

Originally posted by gonnawhoopyourass
Yes, you can. You just have to use your brain. You won't need any tools. Your brain is the tool.
Oh, and it just are normal lightbulbs, the oldfashion lightbulb.

Originally posted by rubberjaw30
turn one on, feel which one is still hot when u return...

Throw switch #1, leave it on for a minute, turn it off. Throw switch #2, leave it on, return to the room. The lighted bulb is controlled by switch #2, the bulb that is not lighted but warm is controlled by switch #1, the bulb neither lighted nor warm is connected to switch #3.

Originally posted by ilywrin
I thought the lightbulbs were on the ceiling...

Originally posted by rubberjaw30
turn one on, feel which one is still hot when u return...

Originally posted by gonnawhoopyourass
yes, u use your brain.....

Originally posted by gonnawhoopyourass
You just have to use your brain.

To find out which bulb controls which switch can be done by turning on switch 1 first waiting 10-20 mins, so bulb reaches its max temp. Then switching on the second bulb for a few seconds and leaving the third off.
When entering the room, switch one will be the hottest bulb, and the cold bulb will be switch 3. leaving the remaining bulb to be switch 2.

Sorry did not see HandyAndy post