ridgeguy

18 ms·

211.
by ridgeguy 4y ago
Not necessarily true. It depends on the object's optical properties. I well remember working on my parents' car in Phoenix summers. The chromed wrenches on our driveway surface got to instant-blister temperatures. Tools with black
212.
by ridgeguy 4y ago
I use this with mods on steps 5 & 6. We have super hard water. Despite soaping to degrease the lenses, our water never just sheets off like soft or distilled water does on a really clean surface. It beads up and leaves deposits when dro
213.
by ridgeguy 4y ago
I have fond memories of my Gilbert chemistry set, circa 1964. It allowed me to learn chemistry and get in slightly serious trouble if I didn't pay attention. Totally excellent. Not long ago, I checked out buying a chem set for my grand
214.
by ridgeguy 4y ago
I think I was 10 when I found this. The interest in rocketry it kindled has lasted my lifetime. Wonderful book! Wish I still had my copy for old time's sake.
215.
by ridgeguy 4y ago
You might try Use of Weapons. If nothing else, it might change your views on a certain class of furniture.
216.
by ridgeguy 4y ago
That's why the really useful dials go to 11.
217.
by ridgeguy 4y ago
Nature paper referred to in OP available as pdf here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8428053/pdf/nih...
218.
by ridgeguy 4y ago
Sorry I didn't see your question until just now. Generally, yes, they'll have to see a judge. Not always, but usually. However, it's really common for debt collectors to present a judge with a stack of cases for entry of judg
219.
by ridgeguy 4y ago
Entire book available for free download at: https://www.ncbi.nlm.nih.gov/books/NBK234265/ under "Views", right-hand column.
220.
by ridgeguy 4y ago
Because they can. So they do. And when you don't pay, they sell your debt on to collections. Collections will sue to get a judgement against you, which will allow wage garnishment and other types of confiscation. Finally, say goodbye t
221.
by ridgeguy 4y ago
Thank you for your thoughtful and thought-provoking post. I can only speculate at the absence of methadone as a replacement for codeine pain meds. Two things come to mind. One is the known respiratory depression hazard presented by methadon
222.
by ridgeguy 4y ago
Not correct, at least for some opioids. Nearly all opioids present the hazard of dose escalation over time to maintain their efficacy. Hence the dose escalation commonly seen with morphine, oxycontin, etc. Most opioids, in addition to inter
223.
by ridgeguy 4y ago
What is the UV-cured polymer? I read a paper [1] by Bercovici, didn't see it identified. [1] https://www.researchgate.net/publication/354978270_Fabricati...
224.
by ridgeguy 4y ago
Second this, an excellent series.
225.
by ridgeguy 5y ago
This 2019 New Yorker article about the Tanis site is a fascinating read. https://www.newyorker.com/magazine/2019/04/08/the-day-the-di...
226.
by ridgeguy 5y ago
I don't know. I doubt there would be any gross indicators (like petechiae incident to strangulation), but maybe there would be some subtle blood chemistry indicator. Nitrogen asphyxiation is an occasional industrial cause of death. I h
227.
by ridgeguy 5y ago
Decades ago, I had an SBIR contract with NASA, the contract monitor being in Huntsville. After I briefed him, I went to see the Saturn V. At that time, it was resting horizontal on a long concrete pad. The briefing went really well, and I w
228.
by ridgeguy 5y ago
Not familiar with the gas used in the Mystery show, but if it was nitrogen pumped into the victim's room, nobody in the rest of the hotel would have felt anything. Nitrogen is an excellent asphyxiant, with no sensible difference from a
229.
by ridgeguy 5y ago
Heavy water is not a radiological hazard, but it's toxic [1]. I doubt there have been definitive experiments on humans (for obvious reasons). I wouldn't try substituting it for ordinary water. [1] https://en.wikipedia.
230.
by ridgeguy 5y ago
I think the 20 arc second deviation is caused by Earth's orbital velocity around the Sun. Did you intend that instead of rotation? The latter causes less than 1 arc second deviation.
231.
by ridgeguy 5y ago
...for certain relative values of "already"...
232.
by ridgeguy 5y ago
It is a beautiful design, isn't it? I'll speculate that the engineers who designed this and other ground-breaking aspects of JWST feel the same euphoria that Beethoven might have felt on completing his 9th symphony. I think beau
233.
by ridgeguy 5y ago
>Cancer and heart disease simply don't impact child rearing. I'm not sure of that. There's data-supported discussion of possible contribution to offspring survival by grandparents [1]. If true, that would disclose a fitnes
234.
by ridgeguy 5y ago
From an evolutionary perspective, I think we can at least say that absence of death doesn't confer a selective advantage, else it would have appeared and radiated in several billion years of biological evolution. It might even be that
235.
by ridgeguy 5y ago
A vehicle tipped with a Pu238 heat source might do the trick with no moving parts. Assumes no pesky rocks in the way.
236.
by ridgeguy 5y ago
Here's a good paper on the mirror actuators [1]. Skimming, they look like hexapod rotary stepper architecture that would not need power to hold a position, only to change position. [1] https://www.esmats.eu/amspapers&#
237.
by ridgeguy 5y ago
I think it's gallium nitride (GaN), not gallium arsenide (GaAs).
238.
by ridgeguy 5y ago
Here's a doomsday nuclear torpedo intended to create enormous radioactive tsunamis at coastal targets. https://en.wikipedia.org/wiki/Status-6_Oceanic_Multipurpose_...
239.
by ridgeguy 5y ago
One security measure effective against a simple class of GPS spoofing is to check against the satellites' epheremi. For example, if your RX tells you that bird #7 is part of your location fix, but it knows from prior valid ephemeris da
240.
by ridgeguy 5y ago
At the time of the first Gulf War, Iraq had the world's fourth largest army. Some details here: https://nuke.fas.org/guide/iraq/agency/army.htm Not decrepit, IMHO.

More ›