Recent content by tarbag

I think we have expressed the mathematical relationship that links the time to matter. according to general relativity we can write rapidly: The equivalence principle gives us the expression between the time coordinate and the proper time measured in the entourage of the mass distribution...

Looking at presenter is easy but following him it depend on the subject and his habliliy to present it. if it is not important or badely presented I prefer to think about another things without changing the direction of my eyes.

Why the light can't escape from the black hole , its mass is nul and it doesn't suffer from gravitationel potentiel?

Thanks This time is observed time or intrinsicaly time. And how much energy is released by second in the source frame.?

Yes , but I don't understood why GRB is short event (small than 200 s) and supernova is long event. Are GRBs produced in the same time as its associeted supernova in all case? and what about their afterglows in the other electomgnetic bands?

What is the relation between gamma ray bursts (GRBs) and supernova? Thanks

the matter is accreted with its energy into black hole, and no things can escape from there after this moment. logicaly the black is not so cold. matter cross the horizon limit with a high speed and consequently its kenitic energy is very high and will be converted to thermal energy. thanks

where is kenetic energy of accreted matter? the black hore is formed by accreted matter from second star. the speed of accreted matter can reach the light speed at the last orbit R_g\sffamily\approx \sqrt{\frac{G M}{c^2}}. After this limit neither light no matter can escape from the system ...

The black holes are traveling like normal stars in the universe under the effect of the gravitation. there is no physical reason to push them to move like photons. in the colapsing matter can drop or be accreted in the last moment with speed of light. thanks

1946: Creation of the ENIAC (Electronic Numerical Integrator and Computer) by P. Eckert and J Mauchly.The programming of this calculator is carried out while recablant between them, its various elements. Composed of 19000 tubes, it weighs 30 tons, occupies a surface of 72 m2 and consumes 140...

Not at all. A gas, before reaching the absolute temperature zero, changes state, and it becomes a solid at the end. Its volume changes but is not null. There will be no shocks between the atoms, not of movement, They are frozen.

The positron has a positive charge and the same mass as an electron. Its mass have nothing with the antimatter, which is still an assumption.

If one definite time, separating two events, as being the number of events between them, (one can use the needles of a clock to count the number of the events), the occur of these two events is independent of the selected reference frame. If the appearance of these two events depends on the...

Thus time exists in your mind only. Since it is a plurality of informations ordered ones after the others. This order is well a reality but its representation with an independent parameter l (t) is just a mathematical tool like an integer number.

What do you mean by relative space? If you want to say the distance between two points, this is independent of the selected reference frame. The distance is an invariant in classical mechanics.