4 ms·
So now we only need better batteries, and we'll soon be able to cut and weld metal with our phone?? :D
by danmaz74 12y ago
So now we only need better batteries, and we'll soon be able to cut and weld metal with our phone?? :D
- coder23 12y agoWouldn't about 12kg of laptop batteries provide 4kW?( wikipedia: ~250-~340 W/kg ) Put them in a backpack.
- Keyframe 12y agoWell, Osborne 1 was 10.7 kgs and it was considered a laptop, so there is that.
- seanmcdirmid 12y agoMy dad had one when I was a kid. They were called luggables, and weren't meant to be put on laps....
- Keyframe 12y agoWhat if you had really strong legs? You're right, of course.
- pflanze 12y agoOne of these would provide 4 kW, too (although I don't know for how long), and is only 5.8 kg: http://www.ev-power.eu/Winston-40Ah-200Ah/WB-LYP160AHA-LiFeYPO4-3-2V-160Ah.html http://www.ev-power.eu/Winston-40Ah-200Ah/WB-LYP160AHA-LiFeY...
- VLM 12y agoMy limited experience with lasers is the heatsink problem is significant, so worry about dissipating a couple KW of heat in your hand or backpack, not carrying around a mere couple KWh of energy. I imagine it would sound and feel much like holding an industrial heat gun for awhile. This might be a problem.
- Hello71 12y agoright; 40% efficiency means 40% comes out as light; the other 60% comes out as heat.
- Crito 12y agoHmm, now I'm imagining something like Reason (http://en.wikipedia.org/wiki/Snow_Crash#Reason http://en.wikipedia.org/wiki/Snow_Crash#Reason). A backpack sized battery, but needs a water-submersed heatsink.
- skorgu 12y agoThe individual laser blades aren't small and all the assorted cooling apparatus is pretty sizable. Some video of it in action: http://www.photonics.com/VideoGallery.aspx?DGID=4c2495b268874aa8b6980e48868f8a6c&DCID=3186e53f50024921bbe028f379010b0b&DMID=c0aa18f840d14901a08e05702a0a8c76 http://www.photonics.com/VideoGallery.aspx?DGID=4c2495b26887...
- jp555 12y agoEven if we had the batteries, where would you put the kilowatts of waste heat that would be generated by it's use? That would be like storing your super battery inside a toaster that it's powering. Yikes.