jloughry

12 ms·

61.
by jloughry 9y ago
As others have already explained well, hydrogen in the air doesn't contribute to the explosion. But what does make a big difference is the air around the bomb---a nuclear explosion in space is way different from one in atmosphere. X-
62.
by jloughry 9y ago
The silly looking swirly light is intended to attract attention so that people will look directly into the camera. [Seriously. I found it in a technical description.] That's evil.
63.
by jloughry 9y ago
Just a note: it's possible to identify encrypted information by its entropy signature. Forensic tools exist that can scan a filesystem (or a raw block device) and highlight likely locations of encrypted data.
64.
by jloughry 9y ago
Roger Bacon wrote about binary notation in the 13th century, although he called bits `fingers'. John Wilkins credited Bacon in his book Mercury, or the Silent and Swift Messenger published in 1641. Wilkins' book is basically a t
65.
by jloughry 9y ago
Borders was amazing: they even carried conference proceedings . Never seen that anywhere else.
66.
by jloughry 9y ago
Galileo used that method (balls rolling on an inclined plane) to slow down gravitational acceleration enough to study it by eye. [Edited to clarify Galileo's use of a slightly tilted ramp.]
67.
by jloughry 9y ago
You make a good point. I meant inductive in the sense that the author of this article really is operating like an intelligence analyst, working from available but limited information and drawing conclusions like `the white cables are prob
68.
by jloughry 9y ago
That article reads just like a SIGINT intelligence report on some foreign country's new radar system, inducing capabilities, limitations, and specifications from clues visible in photographs.
69.
by jloughry 9y ago
Are there any EEs on HN who can explain a characteristic failure mode of LED lamps---as well as LED-lit commercial signs---that very bright, metronomic 2--5 Hz flashing that they do? I've seen it happen to street lamps, desk lamps, com
70.
by jloughry 10y ago
Other intentional sources: 1. vibration from haptic feedback devices 2. modulation of an optical mouse's light 3. infrared LED plugged into headphone jack Unintentional sources of leakage: 4. ultrasonic vibrations from power supply com
71.
by jloughry 10y ago
This is interesting because the disk activity LED is covert , not clandestine. There's no need to try to hide the activity; communication is buried in the normal busy activity of the hard disk.
72.
Disk activity LED used to exfiltrate data from an air-gapped computer(cyber.bgu.ac.il)
3 points by jloughry 10y ago|4 comments
73.
by jloughry 10y ago
Very old Volkswagen beetles used air pressure from the spare tyre instead of an electric washer fluid pump. I remember laughing so hard when I discovered that... I was a teenager. Now that I'm an engineer, it's not so funny; it&#x
74.
by jloughry 10y ago
For extra realism, consider incorporating Trevor Blackwell's analogtv.c source code. It's a faithful DSP simulation of late 1970s television circuitry. You can see it in action in some Xscreensaver modules.
75.
by jloughry 10y ago
I wish I could upvote you more than once.
76.
by jloughry 10y ago
HN missed the leading `cache:' and failed to make your link clickable. This ought to work: http://webcache.googleusercontent.com/search?q=cache%3Ahttp%... (I'm getting `access denied' on the original now too,
77.
by jloughry 10y ago
Replace the %28 and %29 in the URL with parentheses ( ) and the paper loads correctly. The title is spelt like this: SPEAKE(a)R: Turn Speakers to Microphones for Fun and Profit
78.
by jloughry 10y ago
Technically, there is one single TLD at the top of the tree; the root zone is called empty-string-dot and exists at the end of every DNS name, although resolving software doesn't normally require it. But it's why news.ycombinato
79.
by jloughry 10y ago
Set up a full node at home and run it for a while. Turn on logging and watch the messages there. You'll need (at present) about 80 GB of disk space to hold the blockchain. The full node client will download it for you or you can torren
80.
by jloughry 10y ago
I remember that! The ancient Greek dolphin is described pretty well here: https://books.google.com/books?id=cauMt9vJLs0C&lpg=PA162&dq=...
81.
by jloughry 10y ago
Still blurry, but astronomers have resolved the surface of a few stars: Example: http://apod.nasa.gov/apod/ap981011.html List: https://en.wikipedia.org/wiki/List_of_stars_with_resolved_im...
82.
by jloughry 10y ago
A baby "born under a caul". A rare occurrence, it was taken as a sign of extremely good luck in many cultures a long time ago.
83.
by jloughry 10y ago
Aha! Thank you for the explanation. It works a bit like the Apple II disk controller, then.
84.
by jloughry 10y ago
"...used in anger" means used for the purpose it was intended for, not just in testing or rehearsal. The analogy is to a spear or a gun; when used in anger, it is used to hurt somebody.
85.
by jloughry 10y ago
TIL the unit of amplitude, mJy, refers to Janskys [1]. [1] https://en.wikipedia.org/wiki/Jansky
86.
by jloughry 10y ago
I've done it; personally, I pay the extra $5/month for static IP addresses. Depending on your upstream provider, though, it ranges from difficult to impossible to get the reverse DNS for "your" static IP addresses set to
87.
by jloughry 10y ago
Dr Lowe moved everything from Corante to Science including the archives. Not too long ago. Corante was having too many technical problems.
88.
by jloughry 10y ago
Non-invasive fibre optic tap technology has been commercially available since at least the early 1990s. I recall seeing ads for a hand-held device at that time. By carefully bending the fibre over a mandrel, a small amount of light can be m
89.
by jloughry 10y ago
'Member of the Technical Staff' was traditionally the only job title at Bell Labs; it didn't matter if you were a technician or director, you had the same job title.
90.
by jloughry 10y ago
You just made my day with that comment. Just thinking about applying static analysis to the law makes me happy.

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