jamesmaniscalco

6 ms·

1.
by jamesmaniscalco 13d ago
“Mostly retired” is a red herring. Protests of all kinds are always full of retirees. They can speak up for the community while the rest of us have to go to work.
2.
by jamesmaniscalco 11mo ago
This is fun! but not so surprising to me: 987,654,321 + 123,456,789 = 1,111,111,110 1,111,111,110 + 123,456,789 = 1,234,567,899 \approx 1,234,567,890 So 987,654,321 + 2 x 123,456,789 \approx 10 x 123,456,789 Thus 987,654,321 / 123,456,
3.
by jamesmaniscalco 3y ago
There is Smartsheet, which mostly works well for this, but its power-user features are pretty limited compared to Excel.
4.
by jamesmaniscalco 3y ago
Are you sure? I recall that the dish was spherical, not parabolic, and had a movable receiver mounted on cables; moving the receiver adjusts the direction from which signals can be received. Indeed, Wikipedia claims that it was steerable [0
5.
by jamesmaniscalco 3y ago
Sorry, that should say “coherence length”.
6.
by jamesmaniscalco 3y ago
No defects needed for flux penetration in a type-II superconductor. When the conference length is smaller than the penetration depth (up to a factor of sqrt(2)), flux vortices can nucleate as soon as the surface magnetic field gets above th
7.
by jamesmaniscalco 3y ago
Yes, black holes are theorized to evaporate due to Hawking radiation [0]. [0] https://en.wikipedia.org/wiki/Hawking_radiation
8.
by jamesmaniscalco 4y ago
There is a nice calculator for terminal velocity of a sphere in air here: http://hyperphysics.phy-astr.gsu.edu/hbase/airfri2.html That being said, I'm not sure how relevant terminal velocity is for anything but th
9.
by jamesmaniscalco 4y ago
This sounds like a kind of historical GeoGuessr.
10.
by jamesmaniscalco 4y ago
I think OP means “disconnected past” as the spacelike-separated region south of the “now” slice. Boosting could transform points in this region into the spacelike-like separated region in the “future” (i.e. the “disconnected future), no? Th
11.
by jamesmaniscalco 4y ago
Regarding the turn signals - do you use a right-hand-drive car? Is the turn signal stalk on the right side? OP's description is consistent with my left-hand-drive experience, with the stalk on the left.
12.
by jamesmaniscalco 4y ago
You are off by a factor of ten [0]. [0] https://home.cern/resources/faqs/facts-and-figures-about-lhc
13.
by jamesmaniscalco 4y ago
I think this is the difference between two kinds of "wanting", the id kind and the superego kind. We want the chips because they taste good. We want the nutritious food because we understand on a conceptual level that it is health
14.
by jamesmaniscalco 5y ago
I suspect much of the Morse that you hear is radio amateurs (hams) talking to each other. Morse, being a very narrow bandwidth signal, is hardy against noise and low power situations - depending on the band, it is often not hard to talk wit
15.
by jamesmaniscalco 5y ago
Are there really any microwave ovens that use klystrons? I thought most if not all commercial microwave ovens used magnetrons.
16.
by jamesmaniscalco 5y ago
For those interested in growing tropical & sub-tropical plants from seed - mangoes, avocados, citrus, papayas, etc. - Melvin Wei [0] has a great youtube channel. There is a certain hacker spirit to his approach, with lots of experimenta
17.
by jamesmaniscalco 5y ago
I have had a good experience with the browser plugin floccus, which I use to sync bookmarks to a self-hosted NextCloud instance. It has cross browser support. I have a 'sync' folder that is shared across all browsers/devices,
18.
by jamesmaniscalco 5y ago
1 meter is about 27 orders of magnitude down from 100 Gly, and 12 up from 1 pm (approximately the proton radius). So we are closer to the small side.
19.
by jamesmaniscalco 5y ago
For some time now, for buying home improvement tools, I have followed the heuristic “buy the cheap one, then once it breaks, buy the expensive high-quality one.” I find that this helps make sure I don’t waste money on something I will only
20.
by jamesmaniscalco 5y ago
I think the "track count" has to do with the number of tracks available for mixing in the sound editing stage, not how many channels are in the final mix. At the time the sound editors would have been limited by the mixing board i
21.
by jamesmaniscalco 5y ago
I would expand on this to say that they propose to use an innovative cavity shape. Normal-conducting cavities can reach higher accelerating fields than superconducting cavities, but at much lower duty factors and with high voltage breakdown
22.
by jamesmaniscalco 5y ago
> If property values in my neighborhood go up will I be forced to sell or refinance my house to pay the tax bill? Pardon my ignorance, but isn’t that how it works (outside of California)? My understanding is that in almost all US tax dis
23.
by jamesmaniscalco 5y ago
As an accelerator physicist - while some earlier machines were built without vacuum beamlines, nearly all modern[0] accelerators are built with ultra-high vacuum beamlines. Beam quality greatly degrades in contact with residual gas due to s
24.
by jamesmaniscalco 5y ago
I'm in a very similar boat. My best solution so far has been to use Onenote and Outlook plus paper, but I'm looking for something better. Maybe org-mode or a personal wiki? In Outlook I mark emails that I want to respond to/d
25.
by jamesmaniscalco 5y ago
They're not totally separate concepts though, no? The definite integral is the difference of two values of the indefinite integral (antiderivative). I suppose if you're talking about solving them computationally, you can calculate
26.
by jamesmaniscalco 5y ago
> “It will soon be second nature” That’s for sure!
27.
by jamesmaniscalco 5y ago
Homebrewing - the most expensive way to enjoy free beer.
28.
by jamesmaniscalco 5y ago
Nope, any orbit. Think of it this way: an orbiting particle (or piece of debris) with no independent control/thrust will stay along whatever orbital path it's following, round and round (modulo any further orbital decay). After a
29.
by jamesmaniscalco 6y ago
If "time slows down over time" then we would still observe the light at its original frequency - why would the energies of the states of hydrogen atoms in distant stars change over time, but the energies of the photons emitted lon
30.
by jamesmaniscalco 6y ago
> if two points are separated by an interval equal to C If d = c, I don't think it determines the values of x, y, z, and t. What if x = 2c, y = z = 0, and t = 1? Unless I'm not following your logic correctly. In my recollection

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