The answer is 42

@@MarcusAgrippa390 I'm sorry, that's incorrect.

156305.275, temp difference 301 (356-55) divided by (40230-12.5) .007484... is temp change per foot, 3963 times 5280 to get distance to depth in feet minus 40230 to get starting point. This is assuming the temp change is constant. If diameter is 3963 then answer is 55.

@@stephenwooten8661 How can the temperature be 55° F at 3,963 miles deep when only at 7 miles deep the temperature is much higher, 356° F? What would cause the core of the planet to be colder than 7 miles deep? I'm sorry your calculations are incorrect.

@@ronaldkemp3952 That is not what I said, the answer is 156,305.275 it is the first figure in my reply. When I said 55, I was making a joke about the difference between diameter and radius. Read it again, I was saying you would be back at the surface, if the diameter was 3963. Get it now?

Fusion makes heat, heat boils water, boiling water makes steam, steam (under pressure is very energetic) is used to turn turbines, turbines turn generators, which make electricity.

@@stephenwooten8661 I mean fusing atoms makes some other larger atom (ie hydrogen makes helium and so on). What atom is made and where does it go?

@@petesmoviemadness 2 hydrogen fuse to become Deuterium (1 proton and 1 neutron) then anther hydrogen fuse to become tritium (1 proton and 2 neutrons) then 2 tritium fuse to make helium (2 protons and 2 neutrons) and the other 2 neutrons split off, this uses 4 hydrogen atoms to make 1 helium atom, the energy comes from the difference in the weight, about .003 less but when you use E=MC2 it makes for a lot of energy.

Where did you get that knowledge from

how you get to inhale the exhaust fool!

Your knowledge is dated. They've already achieved positive energy balance. "If man was meant to fly, he'd have wings".

@@raylopez99 Physically speaking yes, the NIF achieved a positive energy balance, though the problem with the NIFs approach of igniting a fusion reaction with lasers is the lack of continuity, as @stephenwooten8661 stated. IMO the put on the wrong pair of shoes in the first place. Thats why projects like the ITER focus on another way of confinement, called a TOKAMAK.

@@raylopez99 My knowledge is dated from after this test. They produce more energy than the lasers used, not the entire system. I am not doubting fusion power is possible, I'm saying they still have a lot of bugs to work out.

@@stephenwooten8661 That's true of any technology. They are still finding incremental improvements in turbines, which were largely perfected (more or less) in the mid 19th century, after some pioneering work by an Englishman whose name I forget.

@@iPodHDTV Both Tokomak and ICF are worth goals. Having retired from the invention business (mainly patents) it's clear to me that fusion will work. What laypeople see and what professionals see are like night and day. As a matter of fact, there's a small group of people doing cell death research that I'm not in position to talk about that may not only cure cancer (which is an immortal cell) but also potentially extend human life by 100s of years. IMO another 50 years will be enough for the beta version of this technology. What is holding back such innovation? Lack of good patent laws. Right now it makes more financial sense to "provide liquidity" (buy low, sell high) than innovate. The economist William Nordhaus estimated pioneering inventors only get 5% of the market value of their invention (and often they get zero). It doesn't pay to innovate, hence the "pessimism" that you picked up on. Google also the economists Tyler Cowen and Robert Gordon who echo your pessimism (since IMO they are not in my field).

Evil comes in pretty packages. Always be skeptical.

sure boris! can't make enough money off energy! that is genius level stuff! derp!

@@tombuilder1475 ok Bob the builder, look at this guy he’s knows everything. It’s extremely expensive as of now. Also the cost per MW is expensive. So yeah you can’t make money off of it. Sorry I forgot the word yet, you mewl.

better than a GQP like marge taylor green saying Jewish space lasers will make fusion!

In simple terms, the heat is converted into electrical enery. None of that heat goes to the outside... And by producing fusion energy no carbon dioxide is produced.

Global warming comes from the greenhouse gases produced by burning carbon-based fuel, not the actual heat from the reactor.

wow genius level intelligence! derp!

Pretty sure you were lost way before that...

@jeanniemarkech351 not at all. The fact you are scrolling thru and replying to innocuous comments on a Saturday night seems like you are very lost my friend.