×

Announcing: Slashdot Deals - Explore geek apps, games, gadgets and more. (what is this?)

Thank you!

We are sorry to see you leave - Beta is different and we value the time you took to try it out. Before you decide to go, please take a look at some value-adds for Beta and learn more about it. Thank you for reading Slashdot, and for making the site better!

Comments

top

What is your computer most often plugged into?

NixieBunny Re:Power does not fail here (228 comments)

I live in the Arizona desert, where we have violent summer thunderstorms, and lots of overhead wires for power and telephone. We sometimes have the wind knock over long stretches of lines. It's worse on the mountaintops where the telescope I work on are located. Each site has a generator to keep the equipment running.

3 days ago
top

Profanity-Laced Academic Paper Exposes Scam Journal

NixieBunny Re:There are two problems here... (134 comments)

I am a staff engineer at a university, so I receive most all the spam that is sent to the university's professors. I get many invitations to conferences. I assume that most, if not all, of them are bogus, since I'm not a researcher and most of them are for fields that I don't work in.

When I have looked into one or two of them out of curiosity, I went down a rabbit hole of internet weirdness (SEO, lack of citations, etc.)

3 days ago
top

Linux On a Motorola 68000 Solder-less Breadboard

NixieBunny Re:Thanks for crashing my web server! (147 comments)

This is a very impressive feat. I am old enough to have done stuff like this regularly in my early career, as PCs didn't exist at the time. I figured that no one bothered to build systems themselves and port OSes to them these days.

3 days ago
top

Linux On a Motorola 68000 Solder-less Breadboard

NixieBunny Re:ICs? (147 comments)

There's a guy who took it a step further back and built a custom CPU out of TTL. He also made up his own architecture and instruction set and compiler and OS and application programs...

http://www.homebrewcpu.com/

3 days ago
top

Linux On a Motorola 68000 Solder-less Breadboard

NixieBunny Re:You need to create the tutorial (147 comments)

The whole point of this exercise is that there *isn't* a tutorial.

Learn by doing!

3 days ago
top

How To End Online Harassment

NixieBunny Re:This is not 'How to'. It's moralising (834 comments)

The first paragraph of your comment makes a bit of sense. The second one is out there in la-la land. Your "SJW type" sounds like a straw man. Do you honestly think that people who receive rape and death threats, then publicize these threats, are doing it for the "attention, money, or political power"?

about two weeks ago
top

Eben Upton Explains the Raspberry Pi Model A+'s Redesign

NixieBunny Re:No composite output means no output at all (107 comments)

I believe he's referring to displays that cost less than the Pi... from thrift stores. Spending $200 on a screen for a $25 computer is a bit silly. (I know that some folks use the Pi as a $25 computer for the $200 display they already have, but...)

about two weeks ago
top

Revolutionary New View of Baby Planets Forming Around a Star

NixieBunny Re:Reality check on resolution (91 comments)

This is achieved by having a really big aperture. In this case, the array is spread out over 15 km, so the aperture is effectively that size. Try putting a 15 km array of telescopes in space! The information processing is necessary to combine the signals, as a 15 km single-dish antenna would be a bit tricky to set up.

One number that's woefully missing from the news stories is the wavelength (frequency) at which the observation was made. NRAO has made two sets of receivers, at 3 mm and 1.3 mm wavelengths, for this array. Other countries have made different receivers, but I don't know if any of those are being used right now. Ned more information!

about three weeks ago
top

Revolutionary New View of Baby Planets Forming Around a Star

NixieBunny This image cost a billion dollars (91 comments)

This image is the result of a 25 year project to build a big interferometric array of millimeter-wave radio telescopes in Chile. The ALMA array is a mind-bogglingly complex system of 60+ telescopes, a correlator to combine all the signals, some bleeding-edge technology to maintain phase coherence of gigahertz signals traveling over many kilometers of optical fibers, and a bunch of other feats of engineering. I am awed by the results, and amazed that it was possible to get the whole thing to work.

I'm privileged to get to work on a prototype antenna for this project, which was just installed on Kitt Peak and commissioned today.

about three weeks ago
top

Revolutionary New View of Baby Planets Forming Around a Star

NixieBunny Re:I'm gona ask the hard questions here... (91 comments)

I met one of the guys who did this work at JPL, Jim Blinn, 30 years ago. He was quite a knowledgeable astronomy guy in addition to being a first-rate computer animator.

about three weeks ago
top

Ask Slashdot: Where Do You Stand on Daylight Saving Time?

NixieBunny I live in Arizona, and it's a pain (613 comments)

We don't celebrate DST in Tucson, but all my distant suppliers etc. do, so I have to adjust my mental clock to deal with their different offsets.

about three weeks ago
top

Integrated Circuit Amplifier Breaches Terahertz Barrier

NixieBunny Re:We use stuff like this (81 comments)

3D printing is useless at these frequencies. The metal blocks that the waveguides and mixers live in are machined with a milling machine capable of one micron precision. The dimensions are that critical.

about three weeks ago
top

Integrated Circuit Amplifier Breaches Terahertz Barrier

NixieBunny We use stuff like this (81 comments)

I work in submillimeter wave astronomy, where we would be happy to have a terahertz preamplifier for our receivers. We currently use miers mixer that work at that frequency, but the mixer has to be made with superconducting waveguide to have good performance. There are about five places in the world that know how to make that sort of chip.

about three weeks ago
top

Florida Supreme Court: Police Can't Grab Cell Tower Data Without a Warrant

NixieBunny Re:Criminals who carry tracking devices... (114 comments)

I don't think it's all that wise to use the phones you got from your customers, as they are probably "interesting characters" as well.

about a month ago
top

Florida Supreme Court: Police Can't Grab Cell Tower Data Without a Warrant

NixieBunny Re:Criminals who carry tracking devices... (114 comments)

Yes, it's reasonable to assume that your cellphone is betraying your every move, if it's on you. The cops ignore the laws anyways - we have to deal with it somehow. The bet way is to not make it easy for them, by using other ways of communicating that don't trigger the cop spying machinery.

about a month ago
top

Florida Supreme Court: Police Can't Grab Cell Tower Data Without a Warrant

NixieBunny Criminals who carry tracking devices... (114 comments)

Carrying a tracking device is not a good idea if you don't want to be tracked. Cellphones are basically tracking devices that also place phone calls and take photos of incriminating evidence.

Leave your phone at home when doing naughty things - it will give you an alibi!

about a month ago
top

Independent Researchers Test Rossi's Alleged Cold Fusion Device For 32 Days

NixieBunny Re:Hoax (986 comments)

...or they aren't measuring the output power correctly. That test setup is way too skimpy to actually measure output power accurately.

about a month and a half ago
top

Independent Researchers Test Rossi's Alleged Cold Fusion Device For 32 Days

NixieBunny Re:Hoax? Or not? (986 comments)

Your item #4 is intriguing. I was surprised to see the thing sitting in a shelf in the open with nary a test probe in sight. How *are* they measuring the emitted power?

I want to see a detailed writeup on the experiment!

about a month and a half ago
top

The Greatest Keyboard Ever Made

NixieBunny Just played with one (304 comments)

My nephew showed up with a clean, original model M at robotics meting the other day. He might have gotten it from his dad, my twin brother, a fellow with way too many ancient IBM PCs. Like these.

about a month and a half ago

Submissions

Journals

NixieBunny has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?