How to get really random number? [duplicate]

Question

Possible Duplicates:
Understanding “randomness”
Fastest implementation of a true random number generator in C#

Hello. Function:

Random rand = new Random();
rand.Next()

It gives pseudo random numbers based on time in seconds. How to get really random numbers? I mean totally random not based on system time and some algorithm. Like, when you drop a cube you got really random number, not based on time and any algorithm.

What do you think about using short sample from mic or time between mouse position change?

Answer 1

Put a cat in a box with a bottle of poison, which will be released when a single atom of a radioactive material decays. Come back in one hour and open the box. If the cat is dead, use 0 as a random bit in your program. If it is alive, use 1.

Repeat with as many cats and boxes as is necessary.

Answer 2

you could use a service such as random.org