Recent content by adi

thank you for your replies. i agree with you. further question: would a virtual electron also have a purely invariant imaginary mass?

An elementary electron-> electron + gamma process can not occur by itself in the vacuum because if we assume the photon invariant mass zero and the electron invariant mass positive, energy and momentum can not be conserved at the same time. The delta E may be computed and from the energy time...

And thus one enters the physics approach of "information". This definition of "information" is the opposite of the notion of information entropy in statistical physics. A system has a great number of micro-states that lead to the same macro-state. When tending to equilibrum, the system tends...

This discution will be mostly philosophical at its very beginning. I am curios what one thinks the information is, using his own words. Besides that, there are also scientific theories and I would be interested in discussing them too. I suggest creating a list of "human definitions"...

200 years ago, "energy" was being discovered and since then, one pronounces it every day, without ever being conscious. Everybody talks about energy, yet few understand it. Nevertheless, scientists understand very well what energy is. Nobody understands "information", despite three...

The Mentors's answer is perfect. You dervived a relation when you are not allowed to and you did it wrong. By solving the second degree equation, as I and my friend did, the result is 5.9 s. Using the day to day numerical values for the heigt and the speed of the stone, this amount of time is...