Viewing profile — tullianus

Unfortunately this is not the case. The amplifiers on the transmit-side phased arrays are about 10% efficient (perhaps 12% on a good day), but the amps represent only ~half the pow…

The current slate of Russian GPS jamming is not being done by satellites.

The jammer under discussion is not a satellite. It is a ground-based system that jams satellites. Did you read the article? There's even a photo of the system right at the top.

God I keep coming back to them using photos of twins for the children. Imagine taking this study. You're shown a photo of a kid. Does he look more like a John, Paul, George, or Rin…

The paper is here: https://www.pnas.org/doi/10.1073/pnas.2405334121 No way does this replicate. * Calling p = 0.062 "marginally significant" (Study 1, child perceivers, adult targe…

That would have helped a lot! Using a high-conductance device to transport heat away from the hot side before switching to lower-conductance devices for heat rejection. All I can s…

Tried to use one of these in a space application once: cold side on the sensor, hot side attached directly to a radiator. Unfortunately the thermal conductance [W/°C] from the hot …

Yes, although in practice you will have issues sinking heat at 0K without using additional energy to do so, since that's below the radiation sink temperature of space (~2.73K).

Cerium is common in solar coverglass used in space, but I'm not sure I've heard of it being used for terrestrial applications.

It means "tornado," referencing the 1939 film "The Wizard of Oz." The Kansan protagonist is transported by a sudden tornado to a magical land called Oz.

"Affected" is a strong term. The line along which re-entry was predicted to occur is three times the circumference of the Earth (as you can see in the OP article), and a small frac…

https://archive.is/K51TH

https://archive.is/ad0wU

Helmet-mounted rearview mirror. Looks like the little mirror they use at the dentist's office.

Only partly thanks to overall budget inaction in Congress. The bigger cause in my opinion is Congress proposing huge reductions in Mars Sample Return program funding or outright ca…

You're describing a Control Moment Gyroscope (CMG), famously used on the ISS. They have very high torque output per unit power and mass/volume. They and reaction wheels (fixed axis…

Starlink is not a separate company from SpaceX

The people the DOJ claims are discriminated against (asylees and refugees) can't vote. The issue is SpaceX claiming they can only hire citizens (who can vote) and permanent residen…

A few, yes: https://en.wikipedia.org/wiki/Placentalia

https://archive.is/HWgCM

SpaceX (at least in my experience) requires design and manufacturing engineers to spend shifts on the production line to make sure there isn't low-hanging fruit in improving either…

Counterfeit nutmegs (made of wood) were at minimum widely feared at some points in history: https://www.mentalfloss.com/article/94734/why-early-america-...

New players and stretchable diplomacy period length :)

I think this might be a strength of Diplomacy for current AI models - making contradictory plans with two different players is a perfectly normal human move, as is saying one thing…

Two features that make Diplomacy particularly bad: 1. Length. An in-person game can last easily 12 hours, and is mentally exhausting. Getting 10 hours in and THEN getting screwed b…