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Comment: Re:Substrates (Score 1) 195

by grrrl (#46820579) Attached to: How Apple's Billion Dollar Sapphire Bet Will Pay Off

Thanks for the info, it has been a while since I talked to anyone who knew anything about commercial growth.

If 8" wafers have those issues then do you think it is then feasible to expect an iPhone screen out of sapphire any time soon?

Or will iPhone screens be thicker and thus can absorb more issues seen in thinner wafers, or do screen-grade sheets simply have a higher tolerance for fault densities and not need to be substrate grade?

Comment: Re:Substrates (Score 1) 195

by grrrl (#46820361) Attached to: How Apple's Billion Dollar Sapphire Bet Will Pay Off

They will be in a position to strong arm if they get manufacturing cranking, however I don't think the Apple of today would use something like this simply as extreme leverage against a supplier (though some pressure will of course be inevitable).

If they're smart (and don't for a second think they are not) then they really will move forward with this as another development in the American jobs and fabs and labs that they've started with the Made in USA Mac Pro (I'm not even American but I support smart manufacturing to keep an ever-changing creation industry local).

Comment: Substrates (Score 4, Interesting) 195

by grrrl (#46820119) Attached to: How Apple's Billion Dollar Sapphire Bet Will Pay Off

Sapphire is not just for external materials, it is also a commonly used substrate for growth of various semiconductors for a range of devices (main substrate for GaN (blue LEDs), silicon on sapphire (SOS) tech). There are many reasons to use it as a substrate (transparent, radiation resistant, excellent thermal conductivity but low electrical conductivity) though some disadvantages which have largely been accounted for (poor lattice match to Si, GaN).

We used to get GaN grown on piddly little 2" sapphire wafers, which were themselves to start with hideously expensive. Growing on larger sapphire wafers is very interesting (think of how most production fabs are geared for 12" Si wafers).

Before you know it you may also find internal components made from material grown on sapphire made by Apple in Apple products.

Comment: Re:well, think about his (Score 1) 408

by grrrl (#46711315) Attached to: Australia Declares Homeopathy Nonsense, Urges Doctors to Inform Patients

Agreed that seeking "medicine" and professional therapy is a bad overall habit.

You could also, rather than nothing, try other things like exercise to make her actually tired, talking it out with a friend who can sleep, a more comfortable environment, a bedroom that is ONLY for sleeping (do homework etc in other rooms of the house), or getting her to read books in bed.
Seriously, I can no longer read two pages in the day before nodding off I have conditioned myself so effectively to sleep after reading.

Comment: Re:It's about time. (Score 1) 731

by grrrl (#46282053) Attached to: Death Hovers Politely For Americans' Swipe-and-Sign Credit Cards

In the US, if you use a debit card, it gives you the option of using "debit" or "credit". But that's not entirely true. the choice just determines how you verify: debit to verify with a PIN, credit to verify with a signature. Both come out of your bank account.

It is (or it was - and should still be) be possible to have two accounts on the same card - a debit and a credit (a proper credit account that does NOT have anything to do with your debit account).

In Australia the difference is "Visa debit" versus "Visa" - I think most credit cards that take money out of your debit account have "debit" after the Visa/Mastercard logo on the card.

Comment: Re:It's about time. (Score 1) 731

by grrrl (#46282027) Attached to: Death Hovers Politely For Americans' Swipe-and-Sign Credit Cards

You can have a debit card where the "credit" option uses Visa/Mastercard but debits from your cash account (as you suggest).

BUT you can also have a combined debit/credit card where, depending on which account you choose, accesses your cash account (debit) or a "standard" loan-based credit account (credit) which is *not the same as your debit account*.

These are less common now that most banks offer the "credit" access to your debit account, but I do believe it is still possible.

Privacy

Ask Slashdot: Anti-Camera Device For Use In a Small Bus? 478

Posted by timothy
from the only-we-control-the-blackmail dept.
Paul server guy writes "I am building a limousine bus, and the owners want to prevent occupants from using cameras on board. (But they would like the cameras mounted on the bus to continue to operate; I think they would consider this optional.) They would also like to do it without having to wear any 'anti-paparazzi' clothing (because they also want to protect the other guests on board), and without destroying the cameras. (So no EMP generators, please). We've done some testing with high-power IR, but that proved ineffective. Does anyone have any ideas that they are willing to share?"

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