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On 03/17/2012 10:19 AM, Richard Pieri wrote: > On 3/17/2012 9:18 AM, Jerry Feldman wrote: >> The desirability of the tablet computers are their portability. My >> mother, for instance, has a Kindle, but she won't put it in a case, >> because it makes it too heavy. > > Yep. Amazon's "official" Kindle covers roughly double the carry > weight of the devices. That's why I got a third party sleeve for my > DX. Remember convenience? The sleeve protects the Kindle when it is > in my pack, and stays in my pack when I'm using the device. This is > why Apple redesigned the "official" cover for the iPad 2 as a folding > flap that functions as screen protector and stand base. It's all > about convenience with these devices. > > >> lighter batteries, the tablets are not going to significantly replace >> the laptops until we can reduce the weight of the batteries. > > This is a big part of why I believe that resonant inductance will > replace batteries. RI short circuits the battery weight problem by > eliminating or reducing the need for battery power. An RI-powered The > New iPad wouldn't need 42 Watt-hours of battery packs. A 5 Watt-hour > battery pack would provide enough power for about 30 minutes of > roaming use or several hours of standby power and it would > considerably reduce the total mass. > Agreed, but RI does require in-home or in-business equipment. Additionally, in a truly portable solution, where you are outside or possibly in a train, plane or bus you most likely won't have RI. Today's battery technology is very much improved over a few years ago. This is why I think that carbon nano-tubes will replace Li-ion batteries in that they are essentially capacitors that retain their charge much longer than normal capacitors, and hence a faster recharge cycle, and no chemicals. But, the main for tablets is weight, and batteries are a big factor in weight. Same with electric cars. -- Jerry Feldman <gaf at blu.org> Boston Linux and Unix PGP key id:3BC1EB90 PGP Key fingerprint: 49E2 C52A FC5A A31F 8D66 C0AF 7CEA 30FC 3BC1 EB90
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