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Duration : 0:3:11
I know it is possible that sub-atomic particles are made of energy-like things called quarks. According to my understanding of them they are more like energy than they are like matter. Unfortunately I have a very basic understanding of these particles and their relationship with energy. I have books about sub-atomic particles but they don’t really talk about the influence energy has on matter.
Anyone wanna give me a crash course on energy? How would you define it and its effect? Thanks in advance.
Actually quarks are matter (mass is a better term); they are the fundamental building blocks of protons and neutrons. But from the well-known E = mc^2, where m is mass and c is light speed in a vacuum, we can easily see that all mass is equivalent to energy E.
That is to say, we don’t need to differentiate between mass and energy because they are just different states of the same thing. In fact, we often, and more correctly, say "mass-energy" when talking about matter because they are equivalent.
On the other hand, we know that some particles do not behave like mass should behave. Photons are examples of such particles. For one thing, photons can travel at light speed; mass cannot.
Mass cannot travel at light speed because, at that velocity, all mass has infinite inertia…which is why we frrequently call mass "inertial mass." For example, if we accelerate a proton to 99.99% of light speed, its inertial mass M will be 70.7 times m the rest mass of the proton when it is not moving. This does not mean the proton’s mass grows in size, but it does mean it will be 70.7 times harder to move and/or change direction than when it was at rest.
The power from nuke power plants and bombs comes from converting the mass states into energy states. What happens when we split or fuse mass particles (like plutonium or hydrogen) is that some of the mass loses its inertia and changes into energy. As a result, the sum of mass before the fission or fusion reaction is always greater than the sum of mass after it. And that mass difference is manifest as energy like heat, nuke radiation, light, and so on.
E = mc^2 is a two-way street. We can and have created mass from energy in the lab. We can only do it in the lab because it takes an enormous amount of energy to make even the tiniest bit of mass. An interesting aspect of the energy to mass conversion is that we cannot make mass without also making anti-mass (i.e., anti-matter). For example, we cannot create an electron without creating the positron…the anti-electron. But the anti-matter is short lived and soon disappears as something else, like photons and/or some normal mass.
all copyright goes to Keri Hilson
(thank you for so much comments and views please suggest me a song ^^ thank you)
download link:http: //www.emp3world.com/mp3/116081/Keri%20Hilson/Energy
lyrics:
I wish I could rip out a page of my memory
Cuz I put to much energy in him and me
Can’t wait til I get through this phase
Cuz it’s killing me
To bad we can’t re-write our own history
Such a mystery when he’s here with me
It’s hard to believe I’m still lonely
Chances fading now, patience running out
This ain’t how it’s supposed to be
I’m having nightmares
From sleeping with the enemy
We gotta re-reverse the chemistry
I don’t want us to be the end of me
This love is taking all of my energy
Energy, My Energy
Taking all my energy
Energy, My Energy
Taking all of (my energy)
Seems only like yesterday
Not even gravity
Could keep your feet
Off the ground
When u go to me
How can two be as one
We’ve become to divided now
There’s no use hiding from my misery
Such a mystery when he’s here with me
It’s hard to believe I’m still lonely
Chances fading now, patience running out
This ain’t how it’s supposed to be
I’m having nightmares
From sleeping with the enemy (Oh, Yeah)
We gotta re-reverse the chemistry
(We gotta re-)
I don’t want us to be the end of me
This love is taking all of my energy
Energy, My Energy
Taking all my energy (Energy)
Energy (Energy), My Energy (Energy)
Taking all of
Cause your taking all of my energy
I’m having nightmares
From sleeping with the enemy
We gotta reverse the chemistry
I don’t want us to be the end of me
This love is taking all of my energy
I’m having nightmares
From sleeping with the enemy (Oh)
We gotta reverse the chemistry (Oh, Oh)
I don’t want us to be the end of me
This love
Is taking all of my energy (Energy)
Energy (Energy), My Energy (Oh)
Taking all my energy (Oh-Oh)
Energy, My Energy (Taking all of me)
Taking all of
Ya killing me
Ya taking all of me yeah, oh
This love is taking all of my energy
Enjoy
Duration : 0:3:27
According to the law of conservation of energy, energy is not created from nothing. It is either converted from mass or from other types of energy. In this case, where does the energy for gravity come from?
For instance, the force pushing down the water in Niagara Falls is gravity, and we generate electricity from this energy. Where does this energy come from?
Gravity has no energy. the energy of Niagra falls comes from the rain. The sun’s energy put the water higher than the falls. when the water is high, it is called potential energy. as the water is pulled lower, it releases energy; this is called kinetic energy. it is not the gravity that has the energy, it is the change in position of the water.
I look at a map of energy production around the world. There are so many mines, so many drill sites pumping oil, so much energy being extracted, competing with solar production etc. Is the energy sector bubbled at the top? It just doesn’t make sense to me otherwise!
Unbelieveable energy mining and drilling! Unbelievable!
There are more drillings than ever before but less is oil is being extracted. Scary but its going to get worse.
Here is the link:
http://www.commodityonline.com/news/topstory/newsdetails.php?id=6839
Photosynthesis, the biological conversion from light energy to chemical energy… But I thought photons have zero mass (therefore zero energy?), so where is this energy coming from? Does it just refer to the extremely small energy that comes from a photon’s momentum?
Photons have energy even if they dont have mass (rest mass). Both subjects are not directly related.
The energy of a photon is calculated as Energy=frecuency*plank constants and is usally measured in electronvolts. The average photon in solar radiation has an energy of 1.5 electronvolts.
Again, no mass is required.
I know that at terminal velocity, kinetic energy remains constant. I know that potential energy decreases because the height changes and air friction against the ball causing heat but I know that is minimal. I really need to know also, where does all that extra potential energy go because before terminal velocity, I would have said kinetic energy but because this is constant, where does the bulk of the potential energy go. Please correct me if I am wrong.
The kinetic energy might be constant, but you have to remember that at the point it attains its terminal velocity it is traveling at a great speed. KE is directly proportional to the square of velocity. The heat produced by air friction can not be ignored.
There could be other forms of energy transformation taking place, such as sound, light, etc. But the sum of all these different forms of energy would still be equal to the initial potential energy of the ball .
teddy boy
I know that when an object is held at a particular height above the Earth, it has a quantity of potential energy associated with it, but no kinetic energy. When the object is dropped, it loses potential energy and gains kinetic energy, thereby ensuring that energy is conserved. However, I’ve never understood what happens when the object finally strikes the ground; at this point, it has no potential and no kinetic energy. I’m sure some of it is released as heat and sound, but that can’t account for all the energy, can it?
If the collision between the object and the ground were perfectly elastic, you would find that the object would bounce back up, from the ground, to the initial height that it was dropped from. However, when the collision is inelastic (like the case you are referring to), energy is dissipated by three means: compression waves generated in the air (sound), deformation of the objects involved in the collision, and some heat release due to friction.
Energy is this case (as in every case) is conserved, the problem is that useful energy has been turned into very useless forms of energy – heat, sound, and deformed objects.
With his famous equation E= mc2, Albert Einstein proved that when you come right down to it everything in the universe is energy. Both in the physical plane of our reality of matter and the abstract reality of our mind are made up of energy patterns.
The concept of a universal energy flow is not a new one. The ancient Chinese called this flow chi; the ancient Hindus called it prana. The disciplines that developed in those two cultures – t’ai chi and yoga, respectively- are based on the art of tuning in to the flow of energy and using it to centre the self.
Particle physicists try to understand the nature of nature at the smallest scales possible. Today, we know that atoms do not represent the smallest unit of matter. Particles called quarks and leptons seem to be the fundamental building blocks – but perhaps there is something even smaller.
Empty space, we have discovered, is actually not empty at all.
Astrophysicists have found that less than 10 percent of the mass of the entire universe consists of the kind of “luminous” matter that we can see. What is the dark matter that makes up the rest of the universe? How can we find out? Though we understand many important properties of the fundamental building blocks of our universe, there are untold mysteries still to solve.
Advances in technology allow physicists to build more powerful and sophisticated instruments to look deeper and deeper inside matter. Like adventurers entering unknown territory, physicists forge ahead into ever smaller dimensions.
What will be their next discovery?
Words spoken by Deepak Chopra
Duration : 0:3:18
7th place