Forgot your password?

Comment: All data or your data? (Score 2) 107

by goodmanj (#47791757) Attached to: Judge Allows L.A. Cops To Keep License Plate Reader Data Secret

The ACLU fought the wrong fight on this one. The public should absolutely not have access to *everyone's* plate reader data, that would enable serious privacy abuses and criminal acts ("My ex-wife got a restraining order and hid from me, I'll find her car and then I'll show that bitch...") , and should not have access to lists of people the cops especially want to find (the "hot lists" referred to in the article.)

But people should be able to use plate reader data for their own vehicles specifically to defend themselves in court. ("I couldn't have killed the guy, the cops saw my car across town five minutes later." And yes, there are obvious holes in that defense, but it's admissible and useful.)

Comment: Trap credit card numbers? (Score 1) 248

by goodmanj (#47758683) Attached to: TechCentral Scams Call Center Scammers

I wonder if banks have some sort of honeypot credit card numbers, which one could give to a known scammer to help catch them in the act. I clearly have no idea what I'm talking about, but there ought to be some way to turn the tables on the scammers here. (And yes, I've heard about the elaborate ways people have trolled 419 scammers, I'm thinking of something a little less time-consuming.)

Comment: Re:Small Orion reflector (Score 1) 187

by goodmanj (#47740053) Attached to: Slashdot Asks: Cheap But Reasonable Telescopes for Kids?

In my experience, these short, stubby tabletop reflectors are built like turtles, and can take an enormous amount of abuse without losing collimation. Your phrase "parent becomes the gatekeeper" is great, but it's got me thinking about the refractor you suggest, which is going to be physically big enough that a 9-year-old will probably need a parent to carry and help set up.

I spent a lot of time following the "start with binoculars" advice when I was a kid, and came away mostly disappointed. Tripods help, but even then, 7x magnification rules out all the planets and all but the biggest deep-sky objects. Small reflectors offer a nice middle ground between that and the obscene 200x magnification advertised by your average $50 Walmart refractor.

Comment: Re:Dobsonian (Score 1) 187

by goodmanj (#47739387) Attached to: Slashdot Asks: Cheap But Reasonable Telescopes for Kids?

you can look at something under high magnification for a few seconds before it disappears, and then you have to figure out how to track RA with an alt-az mount under high power and find the object again

You shouldn't be using high magnification with a dobsonian. In fact, at the price point we're discussing here, you shouldn't be using high magnification at all.

Through a 4.5" f/6 Dobsonian with a decent wide-angle eyepiece, you can see Saturn's rings and Jupiter's moons plus a hint of cloud patterns, you can see open and globular clusters, and you'll have to push the telescope to re-center the object once every couple of minutes tops.

Comment: Small Orion reflector (Score 2) 187

by goodmanj (#47739199) Attached to: Slashdot Asks: Cheap But Reasonable Telescopes for Kids?

The telescopes listed in your "one set of suggestions" link are good. To get a telescope that's intended for real amateur astronomers rather than cheap junk for hopeful clueless parents, get a small reflector, not a refractor. I teach at a college: in our class for nonmajors, we introduce them to the sky with Orion Starblast 4.5s, which are cheap, compact and easy to carry, bulletproof, and easy to use. The magnification is low for planets, but that means it's easier to find things, and easier to track them manually through the sky. Orion also sells the SkyScanner 100mm, a slightly smaller, significantly cheaper version of the same thing. Their XT4.5 dobsonian is a little bigger and more expensive, and will give a better view of the planets but be more difficult to use for deep sky objects.

What I'm saying is, buy a small reflector from Orion.

Comment: Re:Modern Television Style - Thanks Beyond Product (Score 1) 362

by goodmanj (#47734569) Attached to: "MythBusters" Drops Kari Byron, Grant Imahara, Tory Belleci

The explanation I've heard is that the show is shot and edited for Australian television first, where it takes the form of a half-hour episode (without commercials? not sure). For the American edition, they pad it up to an hour with commercials, but can't really add new content so it's just repetition.

Comment: Two categories of future tech (Score 4, Interesting) 66

by goodmanj (#47673337) Attached to: Where are the Flying Cars? (Video; Part Two of Two)

The dreams of golden age science fiction came in two varieties: technologies that require massive amounts of energy and power (jetpacks, flying cars, space colonies) and technologies that require incredible control of matter on the microscopic and atomic scale (electronics, biochemistry, etc.) We've mostly failed to make progress in the first category, but we've surpassed the wildest dreams of every 1950s sci-fi author in the second.

One picture is worth 128K words.