I'm wondering about something maybe someone knows more about this than I do.
The world is always looking for a source of energy. Oil, nuclear, coal, wind, solar, etc.
But we are sitting right on top of an enormous amount of energy just under the earth's crust. More than we would ever need. Why is it that man doesn't put too much effort into utilizing this? Is it that technologically difficult? Nuclear fusion is used to build heat, create steam, turn turbines, generate electricity. We sit on top of heat so hot it contains molten metal. Why can't we harness this?
Because it isn't practical from an engineering standpoint. You'd have to drill down pretty far (miles) to get to a spot where you could get enough usable heat to actually utilize for any practical purposes. However, the amount of energy it would take to move a working fluid (such as water) would be greater than the amount of energy/heat gained in the process. In other words, it would take more energy to actually pump a working fluid, like water, down to the depth it would take to get heat and back up again.
I have a similar question, on natrual gas. We have tons of this stuff but why can't we do something to utilize it as a more important energy source?
They are. Fleet vehicles, cars, trucks, buses, plants, etc. Natural gas is being recognized as a fantastic energy source. However, here are the two problems that are going to limit it as a fuel source.
1) Since it is a gas it's not very energy dense. In other words, it takes up a lot of space for the actual amount of energy it provides. That means moving it, transferring it, and setting up an infrastructure to deliver it with always be limited. Like your house may have a 1/2" line with around 5 psi of gas pressure to handle heating. However, if you actually needed to size that line to provide full electricity, you'd have increase the size and pressure significantly (my guess would be about x10). And to run an actual power plant, you'd need a train of tankers to feed the amount of gas needed to keep that thing running.
2) While we have more gas than we know what to do with, it's also because our usage is minimal relatively speaking. If there was a way to all of a sudden flip a switch and convert every car, house and building to natural gas powered, we would find ourselves in similar situation as we are with petroleum because natural gas and petroleum are loosely tied to each other.
I have a similar question, on ocean motion.
Sounds funny, but there is so much force in the movement of the ocean.
It's free energy. Why don't they harness it?
It's been done (research tidal power or tide mills), however overall as an energy source, it has very low energy production. Like wind power, it takes a massive amount of resources to create something that can harness that power. Secondly, the problem with that power source is that it is very low in intensity but spread out across a large distance. Lastly, there is a lot of losses (friction, etc) and maintenance required (salt water is aggressively corrosive) to sustain the energy harnessing equipment. The amount of costs and energy it takes to capture and maintain a tidal power system doesn't pencil out as well as other systems.
I have a question about psychic energy.we have so many crazy people on earth...why can't we harness that?
Because all these crazy people also come with emotional baggage. And as we know, unless you fly Southwest, checked baggage comes with additional fees. These fees end up costing more than the actual psychic energy produced.