Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?
Get HideMyAss! VPN, PC Mag's Top 10 VPNs of 2016 for 55% off for a Limited Time ×

Comment Re: If this is correct it should be easy to check (Score 1) 299

I wouldn't be sad, personally. There's a quote somewhere that says that all the best science doesn't start with "eureka" it begins with "hm, that's odd..." I've always liked that quote.

FYI, there is a person who feels exactly as you do (put it in space, turn it on, see what happens). The project is a 24Ghz microsatellite version, currently being funded on gofundme. It doesn't look like he's going to get the cash for it unfortunately, but it's a step in the right direction.

Personally I'd like to see more designs put forward before we put one in space. We now have 3 competing theories on how this might work (Shawyer's wave group velocity idea, McCulloch's inertial quanta, and now Kolehmainen's paired photon idea). Personally my next step would be to simulate all three as heavily as possible and see if we can experimentally test and match those simulations to indicate which might be the best theory. These theories make predictions about how an emdrive should behave. Let's throw some test cases at them and see which ones still hold water. Do some science, you know? Then figure out the most likely description of what's going on, use that to make the best emdrive we can, and launch it. I'd love to see that.

And you're correct, of course. It's best to be skeptical of such an extraordinary claim. But McCulloch makes a compelling case how it could come to be (my personal pick of the 3 theories so far), and despite the worries about how a functioning emdrive would fit into our current knowledge, to me it still looks like a pretty minimal addition. If momentum were quanta, to me it just looks like a deeper understanding of already well known phenomena but with a new set of corner cases added to the picture. Read McCulloch's paper - it really is an interesting notion.

Comment Re: If this is correct it should be easy to check (Score 5, Interesting) 299

Your signature line is funny, considering the nature of your post. ;)

That being said, you should read McCulloch's paper on his emdrive theory. It isn't a complete rewrite of physics, just an additional term added in to momentum. It struck me as very similar to when Einstein amended momentum with the gamma factor. Everything we saw up to Einstein's time was correct for p=mv. Mostly because velocities near the speed of light hadn't been considered yet. If McCulloch is correct, we get another gamma-like term added in for small accelerations in the form of quanta. If he's correct, of course.

He might be, and he might not be. But I think his paper is pretty interesting and it doesn't seem to me like it would take a massive rewrite of everything we know. It feels more like the transition from Newtonian physics to relativistic physics. More of a "Oh, for these unique and less common cases, here's another thing you need to consider." No magic necessary.

Comment Re:Umm no. (Score 0) 257

Google can only do so much. "Android" is an open-source project and OEMs build their own binaries to ship. Think of it like linux: if you're running linux, you're (likely) running one of a handful of distros; maybe it's debian. So there's a vuln found in the linux kernel and the kernel maintainers patch it. But you'll need to wait for the debian maintainers to push out their own version of the patched kernel, and if they don't do that in a timely manner then that certainly doesn't reflect back on the kernel maintainers. Same situation here - Samsung, LG, et al will build their own Android "distros" to install on their devices, so when there's an patch/update/upgrade each vendor has to build a new version with those fixes and push it out to their customers. Google has no control over that. And unless Google tries to release Android under a license with terms forcing OEMs to keep their systems updated for X years after release, I'm not sure there's anything Google could actually do about this problem.

Comment Re:Frivolous lawsuit (Score 1) 496

Being a passenger in any vehicle is risky? This could be used on a plane or a boat or from the passenger seat while someone else is driving. You can't sue Budweiser for every DUI accident, which makes sense because no matter how drunk I am on shitty American piss-water, it can't be Anheuser-Busch's fault that I broke the law and just happened to do so while using their product. Same rules need to apply here; Snapchat already tells you in the TOS that every user agrees to that you should use the app safely and responsibly, which likely includes DON'T DO DANGEROUS ILLEGAL THINGS LIKE TRY TO TAKE SELFIES WHILE DRIVING TWICE THE POSTED LIMIT. She was already breaking distracted driving and speeding laws, you can't honestly hold Snapchat any more responsible than Apple for making a phone that you can use to distract you while driving.

Comment Re:Frivolous lawsuit (Score 1) 496

Can you point us to any proof that a trophy for speed exists? I can't find any information indicating that this trophy actually exists other than info on this lawsuit saying the teen was trying to get it. Unless anyone can prove that this trophy is real, or that snapchat is somehow encouraging people to drive over the speed limit then this looks pretty frivolous.

Comment Re:Blackmail to allow perverted activities? (Score 1) 1095

Yeah, totally. That pervert should just go use the men's washroom and stare at your son like a proper pedophile. Because if he goes into a washroom with your daughter, he might see...a closed door on the stall she's in. OH! He could try to look over or under the stall door! Surely no perverted females would ever follow your wife or daughters into a bathroom and think of the same thing! You've really thought this through!

Comment Re: Wireless charging is probably dangerous (Score 4, Informative) 169

Not MRIs. When I did a paediatric anaesthesia fellowship we would routinely sit in the room for the scan. Think cardiac MRIs requiring breath holds. The techs sit outside the room cause they need to use computers to run the scanner and also it's really (unpleasantly Even with quality ear protection) noisy. Plus something about pressure in the room that I never understood.

Comment Re: Suggestions anyone? (Score 1) 457

I'm betting that they'll announce that they've "found" information on the phone that could have helped stop the Brussels attacks or something similar so that they can claim Apple's uncooperativeness cost lives and make some more emotional pleas the next time some corporation has the audacity to say no to the feds.

Comment Re:Why stay? (Score 1) 729

It happens in depressed areas too for similar reasons. I had to move away from friends and family in southern Ontario (Canada) when the economy was circling the drain. It wasn't that the area got too expensive, it was that even with as inexpensive as it was, you still needed some form of employment and the only things around were minimum-wage service-industry jobs, which just isn't my cup of tea. While I would have liked to stay, sometimes you've got to go where the money is, whether that means higher paying jobs or lower cost of living.

Slashdot Top Deals

"Your mother was a hamster, and your father smelt of elderberrys!" -- Monty Python and the Holy Grail