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Why Do We Have Lasers, But Not 'Star Wars'-Style Lightsabers?

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Nice interview.
The lack of powerful light weight portable power is holding back many facets of technology.
You want to be a billionaire?!? Develop the next generation battery/portable power supply.
 
LC is so right, there is much technology that could be used and implicated into our lives but just isn't feasible yet due to the lack of battery/power technology at the moment. :(
 
I'd like a lightsaber that when you turn it off, the beam disappears starting from the top and moves down to the host, like in the movies, please. :wave:
 
Laser Chick said:
Nice interview.
The lack of powerful light weight portable power is holding back many facets of technology.
You want to be a billionaire?!? Develop the next generation battery/portable power supply.
Click to expand...

You think people haven't already? I have no doubt that the oil industry/or other organizations has suppressed the growth for greater capacity and performance.
I've read a few articles of promising types of batteries that you never hear of again.
 
We'll see if I regret this but I gave Batteriser some upfront money by way of (pre)buying products to be released at a later date (form of crowdfunding). Since laserpointer builders already know about boost/buck DC-DC converters (Batteriser is boost and constant voltage), the concept is not science, just requires engineering to get enough capability to fit the battery/compartment to save you more money than you would otherwise spend without it.

But their claims have been called overstated as stated by various folks here.

But since I enjoy electronics, this might come in handy. I also bought something similar called Joule Thief.
 
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Capacitors and graphene cells, cold fusion, other breakthroughs, etc, might get us there eventually.

:D
 
If you want significantly more energy density different technology is definitly required. Lithium cells are about as energy dense as you can make anything electrochemical. There might be marginal increases, but with chemical storage there will never be any type of battery that holds 10x more energy per volume or weight than the cells we currently have - it's just not theoretically possible.

With nuclear technology the theoretical limit is in the order to 100 to 1000 times what we currenly have as batteries (for fission and fusion respectively), but there seems to be little chance of developing anything portable apart from a low-efficiency RTG.

Power density could be increased in chemically based storage, as we have seen in batteries for drones that deliver quite a lot of output for their size, but they will not last very long doing so.

Power vs energy density is an interesting thing though: if you could discharge your laptop battery in 1 second, it would output 100 kW+ during that second. Potentially enough to operate a laser that shoots down aircraft, with 1 laptop of 'ammo' required per shot ;)
 
Doesn't the electron have no size? If so wouldn't it be true that theoretically we could harness a virtually infinite amount of electricity in a finite space?
 
VisibleGreen said:
You think people haven't already? I have no doubt that the oil industry/or other organizations has suppressed the growth for greater capacity and performance.
I've read a few articles of promising types of batteries that you never hear of again.
Click to expand...

You've jumped fully on board the conspiracy train, eh?
 
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