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Maglev trains are safe, but I don't think the cost is particularly low, compared to say Diesel powered trains. They do offer other advantages like less noise, smoother ride and potentially higher top speeds:
originally posted by: GArnold
I just think something along those lines could be made to move vehicles of one kind or another safely and without much cost
With maglev, a vehicle is levitated a short distance away from a guide way using magnets to create both lift and thrust. High-speed maglev trains promise dramatic improvements for human travel if widespread adoption occurs.
Maglev trains move more smoothly and somewhat more quietly than wheeled mass transit systems. Their non-reliance on traction and friction means that acceleration and deceleration can surpass that of wheeled transports, and they are unaffected by weather. The power needed for levitation is typically not a large percentage of the overall energy consumption; most of the power is used to overcome air resistance (drag), as with any other high-speed form of transport.
originally posted by: galadofwarthethird
a reply to: bbracken677
To say that they are not effective energy sources is just not true. After all they can thrive on nothing more then dirt and sunlight. Can you do that?
And what do we get more energy back in with our current technologies then we put in?
Researchers Sally Benson and Michael Dale took a look at the industry's energy needs and overall energy production for Environmental Science & Technology and published a paper detailing their findings. What they found will probably allow you to breathe a sigh of relief: solar panels generate more energy than they use, overall, and have been doing so since at least 2010.
"Back in the 1920's, oil was paying off at 100-to-1," said Zencey. "It took one barrel of oil to extract, process, refine, ship and deliver 100 barrels of oil. That's a phenomenal rate of return. If you work out the percentage, that's a 10,000 percent rate of return."
But that's not the rate of return today. Now, conventional oil production worldwide pays off at about a 20-to-1 ratio. And in Canada, where the oil comes from tar sands, it's closer to 5-to-1.
Yes...I eat food that grows from the soil and animals that eat plants. In effect, I thrive on nothing more than dirt and sunlight lol
Any questions? The answer is yes. Rather than spout opinion as fact, perhaps you should do a bit of research first.
Not that I care if the thread gets derailed, but your post isn't exactly on the rails either so you have no room to criticize any other posts. Copper is about 10 times more conductive than lead according to this chart so lead probably still works but not as well:
originally posted by: Nairda
So...to all the brains in here...I saw major derailing of the concept...the concept is simple...density of the material used as a pipe..just curious what would happen if a Lead pipe is used
originally posted by: bank teller
Gerold and I have no idea what the Henge really was. What he was able to ascertain with confidence is that it's resemblance to a currently standing cooling tower is so precise that it simply cannot be anything else.
I'm not as completely sure that the henge was a cooling tower support but I'm pretty sure that lots of people fall for speculation with far less evidence to support it than the cooling tower explanation.
originally posted by: bank teller
The 'bell' does not exist now and might not have ever existed. What does exist at that site in southern Poland is decaying buildings, a strange Henge structure that once held something, underground tunnels and paths in the forest that are largely grown over. Much of what went on there is not fully known to this day.
Yes, one of Gerold's main points is that people accept as "fact" almost anything that is put into print in either books or internet sites. This is then repeated by other authors who are even more lazy in their attitudes towards what is "real". And on and on and before you know it, Google has thousands of hits that repeat a complete fabrication. That's a point that should be taken seriously.
originally posted by: Arbitrageur
would consider anti-gravity something which either cancels gravity (which the lenz effect in the OP does NOT do) meaning it could float above the ground without falling, or else "falls up". If you want to define "anti-gravity" as something which doesn't fall down, well then ordinary airplanes would be anti-gravity according to that definition
I don't know about that but wouldn't that slow the fall which would decrease the current generated?
Minimizing the air gap between the pipe wall and the magnet should also be fruitful as it would maximise the flux density in the metal.
originally posted by: Arbitrageur
a reply to: mbkennel
How did you come up with that?
The discussion was about energy sources that produce more energy than it takes to "collect" them. I provided the example of solar cells having a positive return as of 2010 due to improvements in efficiency. I also provided the data on how much energy it takes to get oil out of the ground and processed. These are not debatable. They are fact. Science, not opinion.
LOL if oil, or wind or solar sources of energy are negative suppliers of energy (takes more to collect them then they return when used) then prove it. Show something that indicates that is wrong.
originally posted by: Ophiuchus 13
Surprised no engine designs are made from similar technology