has nuclear fusion been successfully in the past? Plz explain?
108338
you mean by humans? two examples: the hydrogen bomb is "uncontrolled" nuclear fusion. humans have been able to recreate fusion in a lab for a very brief time, fractions of a second.\nnuclear fusion takes place inside stars all the time, it's how they make energy.
1032044
I know someone in this research area. Info can be found at...\n\nhttp://www.fusionpower.org/\n\nI'd like to say that within 100 years some kind of clean(er) energy will be produced at the atomic level.\n\nBut the hurdles associated with Fusion, really do seem insurmountable at this time.
627239
first of all, two elements combine to form molecules...not new elements, unless you are talking fusion, and that will involve radiation, not voltage (electric potential).\n\nsecond of all, there is no question here, unless you are asking if what you wrote makes sense.  If that is the question, then no, it does not make perfect sense.
293224
To be annoyingly pedantic, there are no fusion reactors yet.  They still have not achieved breakeven point of input energy=output energy.  The lasers you refer to are one area of research to achieve this.  \n\nTo answer your question, it is an evolving field, not just laser technology; but now the design of the fuel pellet is now a subject of interest.\n\n"Nova Laser System\n\nNova is the name given to the second generation laser fusion device at Lawrence Livermore Laboratories. It employs lasers ten times more powerful than the Shiva laser fusion device and will attempt to reach the breakeven point for fusion. Nova makes use of ten lasers which are focused on a 1 mm diameter target area, dumping 100,000 joules of energy into the target in a nanosecond.\n\nAs of 1994, Nova has reached the Lawson criterion, but at a temperature too low for fusion ignition."\n\nHowever, by designing the laser to make multiple passes through the laser material using lenses; and by designing the fuel pellet to these criteria, the LNL's 192 nova lasers  have competition.  a Few (<10 I believe) of these new lasers and redesigned fuel pellets achieved close to the aame results as the 192 nova lasers.
911178
fusion \n\nIT CONVERTS HYDROGEN INTO HELIUM
75043
Nuclear fusion is result of massive gravitational pull which is possible only in very large masses. It can be true that if mass of Jupitor  or any other planet is merged with another very huge mass to reach to required strength it may start fusion, subject it has hydrogen. The reference of Jupitor for that matter is usually to help visuallize the size of the planet.
818133
What nuclear leakage? Are you delving into the far distant past?\nThe nuclear industry must be the safest industry on the globe to day, there are so many safety measures and regulations that it would be almost impossible for any leakage. \nMake no mistake nuclear is the power of the future.
6409
Yes, bombard it with neutrons and it will release energy...\n\nWill it be efficient.. NO. but you can do so.
862842
transporters will perform that function eventually throughout the solar system ! for work, dates, vacations, shopping, school, research, etc., our great grand children to the 5th power will consider it normal. and yes successful sub atomic transportation has already been sucessfully tested and is growing with leaps and bounds and will completely change our world as we know it !
459973
The fusion reaction explosion sent its matter hurtling at great speed outward in every direction in all sizes and speeds, both gases and molten solids, from the size of small particles to the size of the giant planets. Some of it was hurled out at such a great velocity that it was lost forever to other regions of the galaxy.\n\n# THE BIRTH OF THE SOLAR SYSTEM - About four and one half billion years ago our protosun was slowly collapsing under the force of its gravity. As it did this, due to the immense compression caused by gravity it became extremely hot. Millions of degrees centigrade. The more compact it got, the hotter it got. It was not alone in the sky, it was part of a community of stars and protostars that lay in the outer regions of our galaxy, the Milky Way. It was being swept around the galaxy, along with its neighbors, at the tremendous speed of over 500,000 miles per hour.\n\nSo far it had no satellites, (planets, moons, etc.) it’s gravity had sucked in most of the star dust from its vicinity for hundreds of millions of miles in every direction. It was getting close to the temperature and pressure required for a nuclear fusion reaction to occur. The protosun was like a giant nuclear hydrogen bomb waiting to be detonated.\n\n\n# THE BIG BANG - When this tremendous event finally did occur, the nuclear fusion reactions started up in the hottest most dense area of the Sun. Tremendous amounts of radiant nuclear energy were suddenly created in the innards of the Sun. All of this newly released energy caused a sudden sustained violent increase in the pressure and temperature of the Sun creating tremendous chain reactions throughout its core region.\n\nThese reactions did not just cause the star to began shining. It caused the Sun to violently expand to many times its former size and explode. The explosion sent its matter hurtling at great speed outward in every direction in all sizes and speeds, both gases and molten solids, from the size of small particles to the size of the giant planets. Some of it was hurled out at such a great velocity that it was lost forever to other regions of the galaxy.\n\n# THE BIRTH OF THE PLANETS AND OTHER SOLAR DEBRIS - Much of the debris eventually fell back, into the speeding Sun, if its trajectory was just right. Other debris, after it had expended its outward energy and had not broken free of the Sun's gravity, began to fall back toward the Sun.\n\n\nIt fell back toward the Sun, but due to the Sun's great galactic speed and changing position always missed the Sun. This is the matter that became the planets, moons, comets, asteroids of our solar system. They are the survivors.\n\nIt is like a skeet shooter who always aims directly at the clay pigeon, not allowing for a lead. His shot will never strike the pigeon simply because it will always have moved by the time the shot gets there. This is the basis on how our solar system works. It was a time of tremendous chaos in the solar vicinity, with all the matter rushing back toward the Sun from every direction crashing into each other and falling back into the Sun.\n\n# THE PULSATING SUN - After the initial explosion, the rapidly expanding sun began to cool. As it cooled the area that a fusion reaction could take place became smaller and smaller. Some of the fusion reaction began to shut down. The expansion eventually came to a halt as the fusion energy was no longer powerful enough to sustain the expanding outward momentum. Finally the expansion stopped altogether and then the Sun began to contract.\n\nThis at first stabilized the fusion reaction and then as the gravitational contraction of the Sun continued, the area of the reaction again began to increase. When the Sun had contracted to the point where the area of reaction was again very large, the Sun again expanded and exploded outward with tremendous force sending more matter hurling out into space.\n\n\n# THE STABLE STAR?? - This time however the expansion and explosion was
807371
hydrogen atoms fuse to form helium atoms\n\n2.a high temperature,rather a very high temperature\n\n3.i do not u/stand the question.however if the question is where do you find fusion reaction the answer is in the stars and sun\n\n4.similarities \na.both are nuclear reactions\nb.both generate enormous amount of energy\nc.both produce a energy in the form of heat\nd.both are non conventional sources of energy\ndissimilarities\na.fusion is pollution free\nb.fusion calls for very high temperatures to start the reaction\nc.in fusion lighter nuclei combine to form heavier nuclei.in fission heavier nuclei break \nd.fission is easier to control and produce as compared to fusion
923005
pretty much all elements are created in stars, the actual process is very confusing thankfully wikipedia is a better expaliner than i ----> http://en.wikipedia.org/wiki/Nuclear_fusion\nO2 is important because it helps us create lots of energy from glucose
125399
Technology is certainly going to help - for example, there are tests now of fusion power (this doesn't generate as much dangerous radioactive waste that current fission-based nuclear reactors do). But this won't be enough by itself - people need to learn to use less energy, because if we don't reduce the need, there will be a crisis. "Though accounting for only 5 percent of the world's population, Americans consume 26 percent of the world's energy. (American Almanac)"
167961
To put it simply,\nHydrogen fusion works by fusing two Hydrogen atoms into a Helium atom.  This process gives off a lot of energy, which is the source of the sun power.\nIt takes incredible heat and pressure for this nuclear reaction to occur, this is definatly not something you do in your back yard.\n\nFor more detailed info,\nhttp://en.wikipedia.org/wiki/Nuclear_fusion\n\nIt is quite easy to seperate Hydrogen gas from water in a process called "electrolysis".  By passing an electric current through water with a dissolved electrolyte, it is possible to split water into Hydrogen and Oxygen gas.  There are actually numerous other ways of producing Hydrogen gas, but non as well known as electrolysis.
1083262
I don't think it has been discovered yet.  Just recently a UCLA team has been able to produce "cold fusion".  It was not energy efficient, however it will be a good neutron generator.  This just as everyone was ready fo finally agree cold fusion does not exist.\n\nThen there is the whole nano tech revolution going on where new processes that do not work well in the large world work great in the small.  I read stories of ideas to link millions of tiny fuel cells together.\n\nThen of course you have my favorite, Dr. Chu's termite guts solution.  If we could figure out how the protoza in termite guts convert cellulose into ethanol we would have a fuel system to support mankind for thousands of years.\n\nSo, I think you'll just have to sit back and watch it all develop to get the answer to your question. In any case it will come from science.
555978
Nuclear Fusion is when nuclei of smaller atoms combine to make a bigger nucleus and release energy. For example, 4 hydrogen atoms can combine to make one helium atom. A hydrogen atom weighs slightly than 1/4 of a helium atom though. In other words the helium that is produced weighs less than the hydrogen that we started with. That lost mass has been converted into energy according to Einstein's famous equation, E=MC^2.
909853
Fusion requires a lot of initial energy to overcome Coulomb forces on the atomic scale. This energy is found via heat and pressure.\n\nUnfortunately the heat required to reach this energy level are beyond anything we have achieved.\n\nCold fusion is achieving this goal without the great heat.