* Posts by JeffyPoooh

1077 posts • joined 28 Jun 2013

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Disk areal density: Not a constant, consistent platter

JeffyPoooh
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Duh...

The RPM has to be constant (obvious). Therefore the linear speed of the disk surface is going to be a smooth function of radius.

The electronics will have several modes (not an infinitely smooth adjustment), and they'll have to 'switch gears' at certain points.

Therefore the areal density has to be variable across the surface.

The only way it could be held constant would be if the electronics could smoothly adjust to match the physics. And that's obviously not practical when working at the bleeding edge of what's technically possible. It would be practical to be smooth and continuous with low speed garden variety electronics, but not when using the sort of hardware ASICS and gate arrays that would be necessary at these data speeds.

This is all perfectly obvious. Why would anyone assume different?

One can focus on the peak areal density and then mention the typical special efficiency that can be achieved due the limitations of technology.

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'Turn to nuclear power to save planetary ecology from renewable BLIGHT'

JeffyPoooh
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Re: Nuclear expensive? Are you joking?

Nuclear reactors actually have a lifetime 'ON' duty cycle of about 70%. Many people claim that they're "100% available", etc. That's just false.

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JeffyPoooh
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Solar - price per tonne-year of averted CO2

A recently opened solar farm in California has a peak (noon) power of 550MW. It cost $2.5B and averts the emission of 377,000 tonnes-per-year of CO2.

That's about $6,600 per tonne-per-year of averted CO2.

Some sources state that we need to avert as many as 30 billion tonnes-per-year of CO2.

$6,600 x 30,000,000,000 = $200,000,000,000,000 ($200 Trillion).

All the Money in the World (world wealth) is about $240 Trillion.

So if solar is used to avert CO2, then we'll get some change back from All the Money in the World.

I think that innumeracy is a greater menace than 'denial'.

We need to find cheaper solutions. The keyword is "need". It's *not* optional.

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Is there ANOTHER UNIVERSE headed BACKWARDS IN TIME?

JeffyPoooh
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Re: It all went the other way...

@ lorisarvendu

No, more like this:

"In the Beginning There Was Nothing, which exploded..."

... <---- Anti-Particles <---- "CREATION" (Big Bang) ----> Particles ----> ...

(time axis, 0 in the middle)

Feynman said that the anti-particles are just particles going backwards in time, as shown above.

It all balances out.

It explains why we see no legacy anti-particles, just a few recently created one.

It doesn't explain UKIP.

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JeffyPoooh
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Re: It all went the other way...

@lorisarvendu "same particle"

That would help to explain the "ultimate free lunch" aspect of the Universe.

+Universe + -Universe = 0

Apologies to TP and the other UKIP master debaters for the on-topic post. Carry on...

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JeffyPoooh
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Re: It all went the other way...

I need to go find a UKIP news items somewhere, so I can post some screeds about anti-matter.

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JeffyPoooh
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It all went the other way...

Feynman pointed out that anti-matter is fundamentally the same as normal matter going the other way in time. This conclusion was based on our observations of the local stuff - typically created recently.

Therefore at the Big Bang, all the original anti-matter went the other way in time. Because that's all that anti-matter is: it's just normal matter headed the other way in time. So you won't find it here, today.

That's it. Done. Beer time.

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Brit GUN NUT builds WORKING SNIPER RIFLE at home out of scrap metal!

JeffyPoooh
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CR324

Isn't that the type of button-cell battery it requires?

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Solar sandwich cooks at 40 per cent efficiency

JeffyPoooh
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"Investment" represents embodied resources

If you're making massive 'investments', then you are causing the extraction and expediture of massive amounts of resources. Example, Mongolian brown coal to power the factory in China that is making your subsidized solar panels.

If the installation of an expensive and heavily subsidized solar farm makes you feel all warm and 'green', then you might want to recheck your math. It's very likely your decisions were environmentally suboptimal.

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JeffyPoooh
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Re: Warning Words

"Well, if it works for 12 hours a day, that could work out at a 50% reduction in fossil fuel use."

With Math skills like this --^ , we are doomed.

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JeffyPoooh
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Re: Warning Words

The only efficiency worth discussing is watts per dollar, or dollars per watt.

Capture efficiency in % might help, but only if it's cheap. If it's expensive, then it only helps with niche applications such as satellites.

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JeffyPoooh
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Re: Efficiency % important for niche applications

@squigbobble et al

The unit under discussion is: **TONS (or tonnes) of avoided CO2 PER YEAR**

It's already including the 'per year' !!!!!!!!!!

The $2.5B solar farm gives us 377,000 of them.

That's $6,600 each.

We need 30,000,000,000 (30 billion) of them.

That's $200,000,000,000,000 ($200 trillion).

That's nearly ALL THE WEALTH ON EARTH.

The fact that you screwed up simple math and the fact that my post was heavily down voted proves my point.

Most environMentals are innumerate and their ignorance of trivial math and science *is* a greater threat to the world than the deniers.

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Ford dumps Windows for QNX in new in-car entertainment unit

JeffyPoooh
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Re: In-Car Blackberry

"Guess you haven't used any of the QNX powered BlackBerry 10 devices then?"

That's a very safe bet.

Along the lines of, "Well I guess you've never been in Lunar orbit, have you?"

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El Reg Redesign - leave your comment here.

JeffyPoooh
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Given that it's all database driven...

One could imagine a Universe where the users (readers) could select their favorite 'Shell'.

With a Click to Save Preference feature.

It's perfectly do-able.

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JeffyPoooh
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OMG!!! Where are the Comedy Thumbnail Pictures??

I love those Comedy Thumbnails!!

Colour me Sad if they're never to return.

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JeffyPoooh
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Re: Your redesign stinks, sorry, but it does

Android - hold link, select Open in a New Tab.

Still works.

That's my method too. Stack up some tabs for reading.

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JeffyPoooh
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Re: Mobile

"...would you please auto-redirect mobile browsers to the mobile version..."

DISAGREE.

I almost always prefer the full desktop version of virtually all websites. Mobile versions are too often daft. Make it trivial to avoid horrible and limiting Mobile pages, even if we use "mobile" devices.

The other day I was auto-redirected to the Mobile version of a website with infinite scroll, the bottom of the page kept getting further away with each scroll. Guess where the 'View Desktop Version' button was! Bottom of the page!! I could almost catch a glimpse of it with each scroll, just before another dozen items were inserted between me and it. Impossible!

What do you call a Web Developer that graduated bottom of their class?

"Mobile Web Developer"

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JeffyPoooh
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Where's the bloody Start button gone??

LOL.

It's fine. Looks a bit more like a newspaper.

At least there are no Tiles. Thank you.

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No more free Windows... and now it’s all about the services

JeffyPoooh
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Win 8.1 tablet "...priced around $199..."

The HP Stream 7 tablet with Win 8.1 (real Intel version, not RT) was on offer for $99 Cdn with free shipping recently. Even the regular price is only $119 Cdn with free shipping. ONE hundred, not two. $199 would recently get you a Asus EeeBook (X205TA) small lovely laptop, again shipped. $49 for Win Blu Jr phone, no contract, unlocked, do as you please, again shipped. Cdn dollarettes, not even US$.

It's like a war zone. Microsoft is stepping all over Google's stupidly high pricing of their Nexus devices. Considering how crash prone the Chrome browser has become, I'd have to move MS way up the chart and Google way down. Google has become a bit frustrating lately.

Welcome back MS. Missed you. Glad to see you've reinstalled your brain.

Posted from my Nexus 7, Hey look! Chrome hasn't locked up for almost an hour! Wow...

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Uber? Worth $40 BEEELLION? Hey, actually, hold on ...

JeffyPoooh
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"...so once driverless cars are available..."

"...so once driverless FLYING FUSION POWERED cars are available..."

There, I fixed it for you.

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18 million iPHONE USERS HAVE NEVER BONKED to ApplePay

JeffyPoooh
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QotD - Standards

"The nice thing about standards is that there are so many from which to choose."

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JeffyPoooh
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Stick your existing wavey payment card inside your phone's case

Heck. Go all in. Get the oldest and ugliest mobile telephone you can find, clear out a space inside the plastic housing (perhaps as simple as removing the battery), and embed your present Magic-Wavey-Payment RFID/NFC Bank or Oyster card inside. Worst case, cut down the excess card to fit.

It'll be fun. Using some crazy old phone to apparently Bonk payments. Pretend you're talking to someone, walk up, and Bonk.

This can be extended to other items, such as pets.

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Drone in NEAR-MISS with passenger jet at Heathrow airport

JeffyPoooh
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July...?

So, it's pretty important then, eh?

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JeffyPoooh
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Re: Licence required?

"7KG". Seven Kosher Gravitational Constants?

Do you mean 7 kg?

Honestly I scanned through your entire post before I was able to sort out what you were trying to write.

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Walmart's $99 crap-let will make people hate Windows 8.1 even more

JeffyPoooh
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Re: Welcome to Walmart =D

"Third World" obsolete term.

Ref Hans Rosling, Gap Minder, available on TED.

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JeffyPoooh
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HP Stream 7 - $100 Cdn with free Shipping

I bought an HP Stream 7 Win 8.1 tablet for about $100 Cdn. The audio on the headphone socket was full of buzzing noise, as if somebody made a design error in the audio circuits. After several GB of updates and a few days use, the wifi became unreliable. Sent it back for a refund.

Tried again. With the 2nd example, the audio on the headphone socket was full of buzzing noise, as if somebody made a design error in the audio circuits. Maybe interference of some sort. Very annoying.

So we have a tablet that is essentially unusable with headphones.

Chocolate teapot.

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Furious GTA V gamers seek similar ban on violent, misogynistic title: the Holy Bible

JeffyPoooh
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Leviticus is God's gift to Atheists

Leviticus is God's gift to Atheists. Indefensible in every detail.

Now, excuse me. I need to go smote (*) some backtalking children.

(* Hold the International manhunt, it's a joke.)

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SPLASHDOWN! Orion lands safely in the Pacific Ocean

JeffyPoooh
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Re: I wonder

John Houbolt can answer most of your questions.

Substitute Mars in place of Lunar, as in Mars Orbit Rendezvoius.

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JeffyPoooh
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Re: Sorry, I can't get excited about NASA's 'new' 1960's Mercury/Gemini/Apollo Space Program v2.0

"1. ..."

Rebuttal: Apollo 4, 5, and 6. Three unmanned flights that included the CM.

It's safe to assume that they've mapped out a complete test program. Back to your Margaritas now.

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JeffyPoooh
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"...Orion is a horribly expensive capsule..."

I got an idea. They should make a reusable space ship, one that glides back to Earth. It could be turned around in about a month and reused. 'Cause that'll be cheaper and safer. I bet that the risk of failure might be about 1-in-10,000. And there's no way that each launch would end up costing $1.2B. With a fleet of four or five, they could be launched once a week.

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Another lick of Lollipop: Google updates latest Android to 5.0.1

JeffyPoooh
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Re: Which reminds me

"...screen and the digitizer... ...glued together..."

Yeah! And you won't believe this scam! The red, green and blue pixels are all built into one screen. If your red pixels fail, the bastards force you to buy new green and blue pixels too. What a waste!

I complained and they made up some cockamamie story about "ease of manufacturing" blah blah blah...

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Magnifico! Galileo satellite nudged back into correct orbit

JeffyPoooh
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Re: Failure or test scenario?

"...the satellites already up can help guide the other satellites into their proper spots..."

If that's true, then it's weird. It implies a satellite to satellite link system. Or it implies that the ground system can't find their satellites through other means. Or it implies that the ground stations don't know where they are located.

It's either weird, weirder, or weirdest. Or perhaps not precisely correct.

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Violet, you're turning violet! Imagination unveils graphics-tastic hobbyist board

JeffyPoooh
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What Arduino did fantastically correct...

When starting out with a new environment and embedded uC system, the best thing to do first is make an LED blink. Once you can make an LED blink, the learning curve is about half over. The rest is just software, which is of course trivial; so simple that even programmers can occasionally do it correctly.

A blinking LED is the "HELLO WORLD" of the embedded processor world.

The Arduino typically comes with the BLINK program built in, already loaded. It even has the LED on the board. Connect power... BLINK BLINK BLINK BLINK... Examine trivial code. Understand enough to carry on. Shortest learning curve on Earth.

Whoever decided to include BLINK and the LED is a genius.

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JeffyPoooh
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Re: "The Ci20 will cost $65 (US)/£50 (Europe)"

Johnny Foreigner can't buy gasoline (petrol) from the pump in the USA.

They get as far as "Enter your Zip Code", and that's the end of that.

Abandon rental car at pump. Wander inside. Wait sixteen hours while three apparently homeless people deal with their $1700 (each) in lottery ticket purchases. Negotiate with the disinterested clerk about precisely how much gasoline is needed to fill the rental car, and exactly which body parts one needs to leave on deposit to have her enable the pump. Etc. Etc. Etc.

I recently allowed SEVEN HOURS, from leaving the hotel to the flight time. It was just about right. Left just enough time for a quick snack.

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UK slaps 25 per cent 'Google Tax' on tech multinationals

JeffyPoooh
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Slap an import duty on Trademark Rights being "imported"

“Intangible assets such as IP are easier to move [than having fixed assets],” he said. “Companies such as Google and Apple are known for being particularly aggressive in tax avoidance.”

--

When they export profits, import tax (duty) on whatever it is that they are claiming to be importing to balance the books. Often "Trademark Rights". Easy.

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Legendary Brit physicist Stephen Hawking gets full Intel comms refresh

JeffyPoooh
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Re: All we need to do...

"...make sure he keeps talking..." "...bollocks about AI being the end of mankind."

How do we know it's actually him that is talking? Maybe this evil-AI thing has already started?

Maybe this warning about evil-AI, strangely coincident with the new Intel kit, is actually some sort of incomprehensible 'Art of War' misinformation campaign to cause us to take actions aligned with their goal.

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Man asks internet for $1k for pebbles. INTERNET SAYS YES

JeffyPoooh
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"...wastage of water..."

Last I heard about water, it literally does "fall from the sky like rain".

PS: Concerned about wasting paper? It "grows on trees".

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Dig into Iron Mountain and you'll find Seagate and EVault

JeffyPoooh
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Underground vaults...

At some point the risk of an underground fire starts to become a greater risk (and thus major consequences) than whatever might be worrying you about the surface of the Earth.

Perhaps their fire protection system is very good. Billions of gallons of water at the ready. Uh oh... Flood.

Being underground addresses some risks, but introduces others.

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Huawei: 'Nobody made any money in Windows Phone'

JeffyPoooh
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$49 Cdn (~$43US) with free shipping, and they can't make money?

A 'Win Blu Jr.' on the MS-Canada (Luxembourg?) store front. I've got one on the way. Just to try it. A backup phone, or for travel to locations (Asia) with cheap SIM cards.

Microsoft. They fired the gormless twit that was pushing Metro, they "invented" 8.1 with the easy to find Desktop, they dropped the prices, and now our household has gone from ZERO Windows 8 anything to FOUR Win 8 gadgets in a month.

At least they're moving in generally the right direction now. Roughly. Slowly. Less wrong.

The world is a better place when MS isn't being daft. Sunny days ahead.

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Orion: To Mars, the Moon and beyond... but first, a TEST FLIGHT through Van Allen belt

JeffyPoooh
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"...20,000 miles an hour....the challenge that we’re faced with..."

“We’ll be coming in at 20,000 miles an hour and the resulting temp is almost 4,000 degrees Fahrenheit – as a relative to that, molten lava from a volcano is 2,000 degrees Fahrenheit – so that’s the challenge that we’re faced with,” said Price.

Yeah... 'cause, like, it's never been done before.

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FCC bigwig grills Netflix: If internet fast lanes are so bad, why did YOU build them?

JeffyPoooh
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Netflix two-faced?

No... Say it isn't so...

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Device fingerprinting tech: It's not a cookie, but 'cookie' rules apply

JeffyPoooh
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Secure cookie-less browser at work

I still get tailored ads.

One MS ad showed me the three exact items that I had recently purchased from them. In case I wanted to buy spares I guess...

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That sub-$100 Android slab you got on Black Friday? RIDDLED with holes, say infosec bods

JeffyPoooh
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$100? Puh! I got an Android "slab" for $30 two years ago

$30 shipped!

It's hilariously stupid. It's actually Android 2 point something, but on the About screen they just wrote in "4.0".

I just assumed it came laced with spyware from the factory. Used it on a vacation in Asia and it got the SMS job done. At least it didn't end up in the Loboc River this time.

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Hi-torque tank engines: EXTREME car hacking with The Register

JeffyPoooh
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My car has two reverse gear speeds.

In "C" (the taller gear option), I think it could probably do about 100 kmh in reverse.

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JeffyPoooh
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Top Gear feature two 'cars' with massive aircraft engines

One "Bentley" (not really) with a "Spitfire" (not really) engine.

Another German "Fairground Attraction" with a WW2 Bomber engine.

Both were the slowest cars ever tested.

Still amusing. But not fast, by any definition.

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Apple’s $700 BEEELLION market cap makes it more valuable than Switzerland

JeffyPoooh
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Same fundamental error as last time

Apple ... market cap of $703bn

Switzerland ... GDP of about $650bn

One is a total NPV based (not really) on future sales and earnings.

The other is equivalent to annual sales.

Same error, new year.

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Bloke fighting Facebook in court says ad network claims its users lack 'legal capacity' to sue it

JeffyPoooh
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Re: Legally incapable

@DH ...music...

Mixcloud. Which links to FB anyway.

Good luck.

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JeffyPoooh
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Re: Legally incapable

"FB users lack 'legal capacity' to sue"

"People who use Facebook are the product"

Yep. No more than a banana could sue a fruit stand upon which it sits.

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EU-Canada airline passenger data-sharing is not a done deal

JeffyPoooh
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How about sharing exactly and precisely everything written on the Passport?

By definition, the information fields contained on one's Passport should be necessary, sufficient and complete. Airlines should take a *temporary* copy of Page 3 (IIRC) and send it along in advance to the government(s) of the trip destination(s).

Of course the Flight information would be included too, as a related block of data.

Period.

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US taxmen won't say WHY they're probing Microsoft. So Redmond is suing the IRS

JeffyPoooh
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"...government depts, ...two speeds, slow and stop!"

You missed one.

...

3) Full Speed Ahead, in the wrong direction.

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