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Comment: Re:Stick to what you know (Score 1) 387

by wings (#46035157) Attached to: Ask Slashdot: It's 2014 -- Which New Technologies Should I Learn?

The real disadvantage Americans have is that we have no time portals which allow you to get 10 years of experience with a 5 year old technology.

Sometimes I wonder if they're simply looking for someone who was willing to put in in 5 years of 80hr weeks and expecting the same going forward.

Comment: Re:Really instead of ? (Score 1) 445

by wings (#42606935) Attached to: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6

If we had started transitioning seriously a few years ago

Some of us did. All the computers and network equipment at my house has been ready for IPv6 for years. I am just waiting for my ISP to get with the program.

I'm still waiting for my ISP too, but I'm working around that limitation by getting IPv6 from a tunnel broker. I've had dual stack IPv4 and IPV6 access for my home network for about 2 years now and I'm not experiencing any real problems. My IPv6 access is fully routed and suitably firewalled and IPv4 is through NAT.
With applications that support both IPv6 and IPv4 it isn't always apparent which protocol was used for a connection. Everything just seems to work.

Comment: Re:Just the tanks? (Score 1) 114

by wings (#42105147) Attached to: Datagram Recovers From 'Apocalyptic' Flooding During Sandy

It would seem to me that a better idea would be to put pumps inside the tanks, similar to the way it's done in cars. The technology for this is well tested and should not require highly trained personnel to operate it. This would avoid all the potential problems you highlight with pressurizing a tank to pushing fuel up to an elevated pump.

Comment: What's the Efficiency? (Score 4, Insightful) 284

by wings (#41305423) Attached to: Cutting the Power Cable: How Advantageous Is Wireless Charging?
My concern would be the charging efficiency compared to a wired charger.
Now, I don't know about the efficiency of this kind of wireless charger or of wired chargers for that matter, but I'd expect a consumer grade wireless charger to be less efficient than a wired one. If we're going to put a few hundred million of these things in service I'd like to know what the energy penalty will be.

Comment: Re:maybe.. (Score 3, Informative) 155

by wings (#36126238) Attached to: Samsung Unveils New 10" Retina Display

My 3 year old budget laptop has a 1280*800 screen
current laptops in the same price range are 1366*768

Those are the 'wide screen' adaptations of older standard sizes that are being pushed now.
You might not mind, or even think it's great if you watch movies all the time on your laptop, but that's not what I do with one.

Comment: Re:Sounds a lot like the IPv4 crisis (Score 2) 102

by wings (#35562534) Attached to: Broadcasters Accuse Telecom Companies of Hoarding Spectrum

There's a second and very important limitation: Signal to Noise Ratio. Noise has a physical minimum, so to increase SNR more power is needed.

This.

See Shannon's Law: http://en.wikipedia.org/wiki/Shannon%E2%80%93Hartley_theorem

Shannon's Law contains nothing about current limits in technology.

Basically, for a given Signal to Noise ratio at the receiver (specifically at the detector), when the noise power approaches the power of the smallest bit division, you cannot reliably recover those bits and further subdivision is pointless.

Even in a lab, Signal to Noise is never infinite, and put a finite limit on the number of bits you can send in a channel. In the real world, the Signal to Noise at the receiver only gets worse the greater the distance between the transmitter and the receiver (inverse square), and this excludes other sources of 'noise' such as interference from other signals, multipath, propagation or other degradation effects such as holding your iPhone incorrectly.

IAARE (I Am A Radio Engineer)

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