jeffwass

60 ms·

631.
by jeffwass 10y ago
You could crudely think of intrinsic spin as the particle spinning about its own axis. This was what physicists originally thought, and why it's called 'spin'. Though we've since learned this is not an accurate view. Oth
632.
by jeffwass 10y ago
Some TLDR's. Here's the twitter account in question : https://twitter.com/projectexile7 Here's a tweet referencing a Breitbart story that was 'liked' back on 19th May 2016 : https://mobil
633.
by jeffwass 10y ago
Obligatory book link? (My first thought after seeing the tumblr title) https://en.m.wikipedia.org/wiki/A_Short_History_of_Tractors_...
634.
by jeffwass 10y ago
The first and second diagrams are similar, just using the 'outside' vs 'inside' deconstruction. If we label the sides a=3, b=4, and c=5 : The first diagram shows that the big outer square of length (a+b) equals the area
635.
by jeffwass 10y ago
I'm reminded of my old boss's words when I worked as an EE at MIT Lincoln Lab. Whenever someone (self included) distinguished between the meaning of decibel on a signal's amplitude or power, he'd deadpan : "A decibe
636.
by jeffwass 10y ago
Some brand of spray lubricant back in the 90's had a logo with three interlocking gears on the can. An ironic arrangement that could never rotate.
637.
by jeffwass 10y ago
"Today I learned that Germany killed about 5 million Polish, mostly civilians, during WW2" I thought I'd clarify one thing : two-thirds of those 5 million murdered Polish civilians were Jews. Felt it was worth mentioning, as
638.
by jeffwass 10y ago
I considered making an app for this when my first daughter was born. Especially after she had a few words, it was hard to remember which were new or which she had spoken before. Enter a word, and a date, which defaults to current date. App
639.
by jeffwass 10y ago
You've contradicted yourself in the two quotes below. "Tesla is basically taking on a loan in form of a convertible notes." "So at the end of a day: Tesla is raising capital without diluting their shareholders and reduci
640.
by jeffwass 10y ago
Wow! Can you post a link to her blog, or books?
641.
by jeffwass 10y ago
Have you taken a look at LabVIEW? I used it pretty heavily back in grad school. It's a graphical programming language, you connect wires between modules and operators. Its weird to get used to at first, especially if youre proficient
642.
by jeffwass 10y ago
> I don't like having to judge someone's service, and decide how much it's appropriate to tip them based on some unwritten societal rule I use neither Uber nor Lyft, so may wrong here, but don't both services strongly
643.
by jeffwass 10y ago
How did you work with your alpha readers? Ie - did you wait for your first completed draft before showing them the whole thing, or did you show them chapter/scene works-in-progress as you wrote them?
644.
by jeffwass 10y ago
When I was a physics TA, I used similar arguments with double derivatives show the connection between imaginary exponentials and sines/cosines. For f(x)=e^(kx), double derivative d^2f/dx^2 = k^2 f(x) Meanwhile for g(x)=sin(kx), d^
645.
by jeffwass 10y ago
Albert Einstein was offered the second presidency of Israel, unsolicited, to succeed Israel's first president Chaim Weizman. He declined.
646.
by jeffwass 10y ago
FYI, 'Physical Review Letters' is probably the most prestigious physics-focused journal one can publish in. Here's a link the the actual PRL paper. http://journals.aps.org/prl/abstract/10.1103/
647.
by jeffwass 10y ago
Agreed. Especially that they're charging £3.99 for it. I'm also surprised to see this on BBC of all places, since Transport for London specifically makes "Baby on Board" buttons for pregnant women to wear to make it more
648.
by jeffwass 10y ago
I learned in college that the words "Introductory" and "Advanced", when appearing in technical book titles, often don't mean what you think.
649.
by jeffwass 10y ago
Following on my comment, back around 2004 or so when I was doing my PhD in physics, I made a Java applet showing how resonant tunnelling works (ie, the phenomenon that drives the negative differential resistance in the RTD above), and also
650.
by jeffwass 10y ago
In a much older role (nearly 20 yrs ago) my team tried using (quite successfully) a Resonant Tunneling Diode (RTD) as an electronic pulse generator to drive a fiber mode-locked laser. Fun note - the pulses it produced were so narrow that on
651.
by jeffwass 10y ago
I live in London, and really noticed the effects of diesel exhaust (particularly buses along busy roads) on my breathing in the past couple years. I've lived here for over 8 years. It's the NoX that I notice much more than the s
652.
by jeffwass 10y ago
The conclusion on sound quality at the bottom of your link: "when playing an uncompressed 16-bit audio file on the iPhone 6s, the dynamic range dropped from 99.1 dB at the headphone jack to 97.3 dB at the adapter. Though keep in mind,
653.
by jeffwass 10y ago
Hear hear! Congratulations and well done! I also did the same thing several years ago (defended my PhD thesis and got married within the same month), and it was insanely harder than it looks. I don't recommend anybody go through the du
654.
by jeffwass 10y ago
Stone is the big one where the UK 'beats' the USA. Never heard that one used in America. Though our pints are different sizes too.
655.
by jeffwass 10y ago
There are some scale models of the solar system in various museums and universities. I saw the one at UC Boulder a decade ago and remember being blown away by the ratio of how small the planets are to their solar distances. To make the mode
656.
by jeffwass 10y ago
It's almost a "supercube" : https://www.speedsolving.com/wiki/index.php/Supercube There's some math in the regular wikipedia entry, not exactly your case but one for all sides requiring the rig
657.
by jeffwass 10y ago
>"Of course, eventually all energy sources on earth were solar originally" I originally came to reply "Not geothermal". But just read up a bit and found out only a fraction of geothermal heat came from Earth's gr
658.
by jeffwass 10y ago
>Baltimore is the smallest it's been since WWI (for a few years now, to a rounding error) That's not quite the full picture. While population has mostly decreased in the last 70+ years, the rate of decrease has slowed substan
659.
by jeffwass 10y ago
I also had major battery issues after updating my 6+ a couple weeks ago, but somehow they've resolved now. I'm not sure why or how things got better. At first I could see the battery power dropping in almost real time. Using safar
660.
by jeffwass 10y ago
I always found it ironic that pharmacies sell cigarettes and junk food.

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