Will there ever be nuclear powered cars?

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Discussion Overview

The discussion explores the theoretical possibility of developing nuclear-powered cars, specifically focusing on fusion reactors and their potential size and safety implications. Participants consider the technological feasibility, energy requirements, and the implications of such technology in the future.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants propose that a fusion reactor could theoretically be miniaturized to the size of a small box or soda can, but the technology may be centuries away.
  • Others argue that current fusion research, which includes plasma and laser methods, is unlikely to yield a reactor small enough for automotive use without a significant breakthrough in physics, such as cold fusion.
  • One participant suggests that energy storage solutions, like isomer energy storage, might be more practical than fusion generation for vehicles.
  • Concerns are raised about the potential for nuclear technology to be misused, particularly regarding the creation of hydrogen bombs without detectable radioactive materials.
  • Another participant notes that the physics required for certain advanced nuclear weapons may not yet be discovered or may not exist at all.

Areas of Agreement / Disagreement

Participants express a range of views on the feasibility of nuclear-powered cars, with no consensus on the timeline or technological requirements. Concerns about safety and misuse of nuclear technology are also debated without resolution.

Contextual Notes

The discussion includes assumptions about future technological advancements and the nature of nuclear physics, which remain unresolved. The feasibility of cold fusion and the specifics of energy storage methods are also not fully explored.

KCL
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Let's say 100 years from now... or 200. Whatever. Is it theoretically possible to make a fusion reactor the size of a small box... or a soda can?

And if this could be possible, will the tech be purposely hidden or outlawed because it'd mean easier access to small nuclear bombs for terrorists?
 
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KCL said:
Let's say 100 years from now... or 200. Whatever. Is it theoretically possible to make a fusion reactor the size of a small box... or a soda can?

And if this could be possible, will the tech be purposely hidden or outlawed because it'd mean easier access to small nuclear bombs for terrorists?


Present work on fusion power falls into 2 broad classes, plasma and laser. Neither of them could ever be made small enough to drive a car.

The only possibility would be for someone to discover a new physical principle, such as cold fusion - which to date has never been successfullly demonstated.
 
It is theoretically possible -- no laws of physics preclude it -- but the technology to achieve a fusion-powered car may well be hundreds or thousands of years away.

- Warren
 
I don't think you need all that much energy for a car, and even a semi is only an order of magnitude greater. Safe bet that storage will always be easier than generation, though the lines tend to blur, (e.g., fuel cells, with fusion being a deuterium fuel cell). Isomer energy storage would fill the bill nicely I would think. In any event, one of the necessary enabling inventions would likely be a perfect neutron shield.

Ed
 
Thanks for the replies!

Last question... if somebody figures out how to make a hydrogen bomb w/o a smaller fission bomb to start it off... are we screwed?

If there's no radioactive material to detect it and no restriction of limited uranium supplies... Wow, it's frightening to just think about it.
 
KCL said:
Thanks for the replies!

Last question... if somebody figures out how to make a hydrogen bomb w/o a smaller fission bomb to start it off... are we screwed?

If there's no radioactive material to detect it and no restriction of limited uranium supplies... Wow, it's frightening to just think about it.

It is more frightening to think of global warming, suicide bombers, or even the sun burning out. The kind of H bomb you are concerned about requires physics that has not yet been discovered and may not exist.
 

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