Beta
×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Comments

top

Apple Edits iPhone 6's Protruding Camera Out of Official Photos

YesIAmAScript it's simple math, similar triangles (401 comments)

On the smaller phone (iPhone 6) the lens is 50mm from the far (button) edge of the phone and protrudes 0.8mm. The phone is 7mm thick.

Thus there is a triangle formed on the top of the phone which is 0.8mm tall and 50mm base. Now, if you make the triangle 7.8mm tall you form a triangle with the front plane of the phone, a triangle with a base (7.8/0.8)*50 of 487mm.

So if you take the picture from less than 487mm away (half a meter) you can take a picture which doesn't show the camera and doesn't show the face of the phone (thus is "edge on") without using any photoshop trickery. The phone body will simply block the camera from view.

And that's surely what Apple did. It's not hard to do.

Also note: you don't have one, troll. It doesn't come out for a couple more days.

yesterday
top

If Tesla Can Run Its Gigafactory On 100% Renewables, Why Can't Others?

YesIAmAScript same junk as last time (444 comments)

You cannot base any real analysis on figures take by looking at an artists rendering of the site.

The article says that they will have 85 windmills because there are 85 windmills in the picture. This is garbage. It is an artists rendering!

If you want to have a serious discussion, you have to wait until there is some actual real info to discuss.

Note that net metering is not running your plant completely off renewables. It's running it off renewables some of the time.

5 days ago
top

First Intel 14nm Broadwell Core M Benchmarks Unveiled

YesIAmAScript work/Joule (51 comments)

or MIPS/Watt.

work per Watt makes no sense.

work/Joule is how "cheaply" you can get something done. MIPS/Watt is how fast you can get something done given a restricted power supply (or power envelope).

about a week ago
top

Tesla Plans To Power Its Gigafactory With Renewables Alone

YesIAmAScript Re:batteries cost money (260 comments)

I forgot to do the 30% part.

2900MWh times 61 * 0.3 or 53GWh, 53M kWh. 530,000 packs or $2.66B worth of packs (apparently I misplaced a decimal point before). 1 year of entire plant output.

A lot closer to workable, but still unworkable.

This is why grid-scale electricity storage is considered a nascent technology instead of a solved one.

about two weeks ago
top

Tesla Plans To Power Its Gigafactory With Renewables Alone

YesIAmAScript batteries cost money (260 comments)

And those batteries cannot hold a charge for 6 months anyway.

Even if they could, you're talking about a deficit of about 1/3rd at the peak of winter and a corresponding surplus in the summer. So let's assume you have a 1/3rd total energy surplus for 2 months in the summer and have to hold it 6 months until winter where you use it up.

That'd be 2900MWh times 61 or 177GWh. that's 177M kWh. A Tesla pack holds 85kWh, let's assume it's about to become 100kWh. And the pack costs over $10K, we'll assume it costs $5K.

That would mean they need 1,770,000 packs, at $5K a piece or $89B worth of packs. It's also the entire output of the plant for 3.5 years.

Does this seem workable to you?

I think you're not getting a good grip on the actual size of the problem.

about two weeks ago
top

Tesla Plans To Power Its Gigafactory With Renewables Alone

YesIAmAScript Re:Musk worship (260 comments)

> Is it getting major tax breaks?

Yes. It's getting huge tax breaks here. It got a nearly free auto plant from California.

It gets $7500/car in subsidy from the feds. Many states give $1500 to $5000 on top of that. Some countries they sell into give tens of thousands equivalent.

And this is beyond the emissions trading money it gets, which is a subsidy, but not directly from governments, just enforced by the government.

>becasue they are high end luxury vehicles. Do you send letter to Mercedes telling them their care a rudely expensive?

If they charged $90K for a car which is luxury equivalent to a Hyundai Sonata I would. It's a nice car, but it doesn't measure up to other $90K cars on luxury.

about two weeks ago
top

Tesla Plans To Power Its Gigafactory With Renewables Alone

YesIAmAScript "some storage" (260 comments)

From the article:

"Reno gets an average of five peak sun hours per day."

Remember, as soon as you say the word "average" you are counting on a huge amount of storage so that you get the average amount of energy every day, even if that day is below average. And even if every day for the last two weeks has been below average.

In in fact, if you are using solar, you have to understand that nearly every day between the autumn equinox and the spring equinox is below average. That means you need enough storage to store up electricity all summer so you can use it in the winter! This is not at all realistic. More realistic is to make sure you produce more than you need in the summer and enough in the winter.

This does use more than solar though. However, I can't believe this guy counted the windmills in a PR picture.

Anyway, buying and erecting a 3MW windmill costs about $10M. That would mean Tesla would spend $850M on windmills. You cannot seriously think that Tesla is going to spend $850M on windmills before the plant even opens.

about two weeks ago
top

Microsoft Defies Court Order, Will Not Give Emails To US Government

YesIAmAScript Re:customer-centric (419 comments)

This isn't seizing. This is ordering an entity to produce evidence. Yes, the US could order a US company to produce the contents of a safe deposit box in Europe. If the company doesn't comply, the US arm would be fined until it does comply. That is if the US couldn't get cooperation from local authorities to get it seized.

The US government isn't saying anything about other countries' laws not applying. The US government is saying its own do. Where there is a conflict, it really isn't the US government's problem, it's MS' problem.

And this whole thing works in reverse too. US companies in the EU are required to comply with EU laws, including producing evidence that is outside of the EU.

Just to wonder, if you really believe that out of the US is out of the US' reach, you must be really shocked to hear of the IRS now finding out about money in offshore accounts and taxing people on it, eh?

about three weeks ago
top

Ask Slashdot: What To Do About Repeated Internet Overbilling?

YesIAmAScript 2x AT&T's elite service? (355 comments)

AT&T UVerse is 26-36mbit if your system has their FTTN upgrades. And if you can get sonic.net, chances are it has them.

sonic's tech support is truly fantastic, but I can't deal with the slow speeds anymore. The upstream speed is particularly glacial.

about three weeks ago
top

Solar Plant Sets Birds On Fire As They Fly Overhead

YesIAmAScript NIMBYs? Crackpots? (521 comments)

California has had 2-3 of these running for decades. Yes, newer ones are bigger, but even the smaller ones like the one in Coalinga can fry a bird if it flies near the focal point.

Maybe just stop building these. They are quite expensive. They are the most expensive source of electricity, bar none.

http://en.wikipedia.org/wiki/C... (sort by levelised cost).

about a month ago
top

Project Aims To Build a Fully Open SoC and Dev Board

YesIAmAScript Raspberry Pi was putting a chip on a board (47 comments)

Well, securing supply of an already existing chip at a good price and putting it on a board.

That doesn't relate to designing an entire SoC and getting it fabbed.

about a month ago
top

How Google Map Hackers Can Destroy a Business

YesIAmAScript you need to claim your business (132 comments)

Make a google account. Claim the business. go through the verification process.

https://support.google.com/pla...

And then after that they only take updates from you unless someone else can succeed at the verification process which should be a bit hard without pilfering your mail.

about 2 months ago
top

Netflix Could Be Classified As a 'Cybersecurity Threat' Under New CISPA Rules

YesIAmAScript it's not not an effort (125 comments)

"that may result in an unauthorized effort to adversely impact the security, availability, confidentiality, or integrity of an information system or information that is stored on, processed by, or transiting an information system."

It's not an effort (authorized or unauthorized) to adversely impact any of those things. It is an effort to deliver video.

You changed "effort" to "impact". You're changing the meaning of the sentence.

If someone were to hijack Netflix' traffic to create an effort to deny service, then that would be a denial of service attack and ISPs could counter that, as ISPs already counter DoS attacks.

about 3 months ago
top

Netflix Could Be Classified As a 'Cybersecurity Threat' Under New CISPA Rules

YesIAmAScript no, it's not true (125 comments)

According to the bill a threat is anything which is anything which is part of an unauthorized effort to deny access. Netflix streaming which inadvertently leads to a denial of access would not be part of an effort to deny access.

Here is the bill.

http://www.feinstein.senate.go...

about 3 months ago
top

BMW, Mazda Keen To Meet With Tesla About Charging Technology

YesIAmAScript Re:nissan or mazda? (137 comments)

No LEAF has a 3.3kW charger any more. All models, including the base S support 6.6kW beginning with the (now current) 2014 models.

about 3 months ago
top

Russian RD-180 Embargo Could Boost American Rocket Industry

YesIAmAScript they do have redundancy (179 comments)

One of the companies who makes the launch system was required to take out a license to produce the boosters themselves. This is the backup plan.

It's not a great backup plan, because just having the plans and license doesn't mean you necessarily can make them, especially with the reliability needed for defense launches.

about 3 months ago
top

Sparse's Story Illustrates the Potholes Faced By Hardware Start-Ups

YesIAmAScript Re:Shame the light itself sucks (103 comments)

What 900 lumen light are you using?

I've got a couple 900 lumen lights and they're bright enough that if I shine them at cars the drivers are mildly upset about the brightness. It's like hitting them with high beams (although not covering as much area as a headlight).

I agree 200 lumens and the down-facing output is strange. I expect this is for urban riders who mostly use the streetlights to see.

about 3 months ago
top

How MIT and Caltech's Coding Breakthrough Could Accelerate Mobile Network Speeds

YesIAmAScript in simplified terms, it's forward error correction (129 comments)

And why do they use TCP if they are trying to avoid retransmissions due to lost/corrupt packets?

This seems to say that it's most trying to avoid link-layer retransmission, not transport-layer. So somehow I need to figure out all the links my transmission is traversing and disable link-layer retransmission on all of them?

about 4 months ago
top

The Brakes That Stop a 1,000 MPH Bloodhound SSC

YesIAmAScript Killowatts are power, not energy (262 comments)

And 4.6kW isn't that much power anyway. About 60HP.

I've seen resistor boxes used for testing EVSEs that take 6.6kW and of course don't fail.

about 4 months ago

Submissions

YesIAmAScript hasn't submitted any stories.

Journals

YesIAmAScript has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>