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jacket
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The universe began with the Big-bang and then formed into today's state. But which came first?
Mass or Energy?
Also what about Gravity?
Mass or Energy?
Also what about Gravity?
jacket said:You are saying Energy, Mass and Gravity all came together, at once, right at big-bang?
Drakkith said:Came together? I don't quite like this terminology, it implies that they may have been separate at some point, which is not true.
jacket said:How come Energy have Mass? Can I say 'mass of this energy is x kg' ?
Drakkith said:Absolutely.
You can find the mass of an amount of energy by using the equation: e=mc2
jacket said:Then if energy has mass then does energies attract one another? Or does matter attracts energy?
Drakkith said:Energy is not a physical object, it is a quantity. As such, it cannot be attracted by forces, only physical objects like particles can. You cannot have "energies".
Mass cannot come before energy, nor vice versa.jacket said:But which came first?
Mass or Energy?
DaleSpam said:Mass cannot come before energy, nor vice versa.
No, I don't mean that and I didn't say that. Neither came before the other. Mass and energy always come together. You cannot have one without the other.jacket said:You mean energy came first, then mass?
DaleSpam said:Mass cannot come before energy, nor vice versa.
jacket said:You mean energy came first, then mass? What about gravity?
DaleSpam said:No, I don't mean that and I didn't say that.
That was nice. So any system can 'have' energy. But then what is meant by 'Energy has mass' ?Drakkith said:It may help to understand what energy is. Let me try and come up with a decent explanation.
Mass has energy, so it gravitates.jacket said:What about gravity?
Crazymechanic said:gravity is like the shadow of a man walking on the sunny side of the road ,
Just as mass/energy came so came gravity it was there since the very first instant if there ever was one.
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energy is just one form of mass,
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Not only any system can have energy but all systems have atleast some kind of energy in them.
jacket said:That was nice. So any system can 'have' energy. But then what is meant by 'Energy has mass' ?
Energy and mass are two fundamental concepts in physics. Energy is the ability to do work, while mass is a measure of the amount of matter in an object.
In the context of the universe, it is believed that energy came into existence first. The Big Bang theory suggests that all matter in the universe was created from a singularity, which contained a huge amount of energy.
Yes, according to Einstein's famous equation E=mc², mass and energy are two forms of the same thing and can be converted into each other. This has been demonstrated in nuclear reactions where a small amount of mass is converted into a large amount of energy.
As mentioned before, energy and mass are two forms of the same thing. They are related by the speed of light, as shown in Einstein's equation E=mc². This means that mass can be converted into energy and vice versa.
No, energy is not dependent on mass. Energy can exist without mass, such as in the form of light or electromagnetic waves. However, mass is dependent on energy, as it is a form of energy itself.