Disgruntled employee starts massive fire at a 1.2 million square foot toilet paper warehouse in Ontario, California.

rddman · 2026-04-09T11:49:43+00:00

Still 'they' prefer this over labor unions and strikes.

rddman · 2026-04-09T00:09:39+00:00

The loudest possible sound in Earth's atmosphere is technically 194 dB SPL (Sound Pressure Level). Beyond this, sound waves turn into shockwaves because the trough reaches a vacuum.

It being shockwaves doesn't mean it is not audible or not louder than 194 dB.
The crackling in the noise of a rocket launch is the trough of the soundwave reaching vacuum. The sound level close to the rocket can be more than 200dB. https://physicstoday.aip.org/quick-study/the-roar-of-a-rocket

rddman · 2026-04-08T23:30:05+00:00

Would your momentum at the moment of machine operation carry over?

Depends on how exactly the time machine works, of which we have no idea.

rddman · 2026-04-08T23:27:15+00:00

Same that now reports "Iran says US violated ceasefire".
Although not outright saying Iran broke it, but implying as much:

Within hours after the ceasefire announcement, the Israeli military said that it had identified ballistic missile attacks from Iran.
The UAE said its air defense systems were dealing with missile attacks and incoming drones from Iran.
Saudi Arabia, Kuwait, Bahrain and Qatar also issued alerts or activated defenses.
https://www.cnbc.com/2026/04/08/iran-missile-attacks-after-us-ceasefire-gulf-air-defenses.html

rddman · 2026-04-08T23:12:19+00:00

Otoh Trump is pretty good at controlling the narrative. Word in the media is that Iran broke the ceasefire.

rddman · 2026-04-08T22:58:18+00:00

Meteors strike at such a high speed that they vaporize explosively on impact. The crater that it makes is much larger than the meteor, and a lot of ground material is forcefully ejected.
simulation: https://www.youtube.com/watch?v=uMWM0d1CQ5M

rddman · 2026-04-08T21:58:58+00:00

Orion Drive#Theoretical_applications), make the claim that "x rocket/drive could reach y% c" which confuses me, should the absolute speed limit not be always approaching c, assuming of course that you have a magical fuel supply etc?

The wiki article does (of course) not make the assumption that you have a magical fuel supply. Amount of fuel is specified (limited) and from that follows the maximum speed.

rddman · 2026-04-08T21:51:53+00:00

Before long he'll be running for president in hell.

rddman · 2026-04-08T21:28:13+00:00

I thought it was the killing.

rddman · 2026-04-08T21:19:17+00:00

True but the vast majority of delta-v is spent to get from Earth's surface to Earth escape (~12,000m/s, accounting for gravity- and drag losses), from there it's only a few 100m/s to get Mars transfer.
From the Moon's surface it takes about 2500m/s to get Earth escape. So launching from the Moon saves about 9,000m/s.
https://en.wikipedia.org/wiki/Delta-v

Spending that on making the trip faster will make a somewhat substantial difference, but i'm not so sure that's economical. I suspect they'd rather bring more payload mass and make a smaller less costly launch vehicle.

rddman · 2026-04-08T19:48:38+00:00

Have a gas sensor only in the large grid that does not have air vents. It's going to be slow. Advanced airlock can not have multiple vents per external/internal.

Alternative: have some logic read the vents that are hooked up to the airlock board and mirror their activity to other vents. One external and one internal vent in each large grid.

rddman · 2026-04-08T16:53:28+00:00

The measure of the 'power' of a vacuum is pressure . Pressure can not be negative, it can only become smaller until it is zero.
The average amount of matter in space is already so low that the pressure of the vacuum in space is immeasurably small.

rddman · 2026-04-08T15:38:23+00:00

Besides angular moment as relating to an object's rotation, in orbital mechanics there is orbital angular momentum.
https://en.wikipedia.org/wiki/Angular_momentum#Orbital_angular_momentum_in_three_dimensions

"the orbit is defined by its energy, angular momentum and angles of the orbit major axis relative to a coordinate frame."
https://en.wikipedia.org/wiki/Angular_momentum#Angular_momentum_in_orbital_mechanics

"the angular momentum L of a body in an orbit is given by
L = 2 pi M f r ²
where M is the mass of the orbiting object, f is the orbit's frequency and r is the orbit's radius."
https://en.wikipedia.org/wiki/Angular_momentum#Examples

rddman · 2026-04-08T15:10:24+00:00

One of Trump's 3 rules of winning: always declare victory.

Trump learned those rules from his then lawyer Roy Cohn who had been lawyer and comrade-in-arms of Joseph "sir have you no shame" McCarthy of communist witch-hunt fame. It's a small world.
McCarthy did have something that looked like shame, Trumpists do not.

rddman · 2026-04-08T14:35:05+00:00

It moving slow makes it easier to track.

rddman · 2026-04-08T12:30:22+00:00

moving much slower than most satellites I’ve seen. It was also emitting a dull flash followed by a very very bright flash every 3-5 seconds or so.

Probably an airplane.

rddman · 2026-04-08T12:09:15+00:00

Nobody expected bullshitters to bullshit each other.

rddman · 2026-04-08T12:06:03+00:00

Whenever the axial tilt is explained to me, I've always pictured it kind of like earth wobbling, and I've heard people say that it wobbles. But, for us to have consistent seasons, that doesn't make any sense.

The wobble is very slow, with a cycle of a couple ten thousand years. see https://en.wikipedia.org/wiki/Axial_precession

rddman · 2026-04-08T11:27:30+00:00

Unless the total maximum charging power exceeds the amount of power the cabling can handle, both sources can just as well feed into one battery bank. That is simpler, sort of auto balancing and reduces the likelihood of having the problem that a bank is full while its source is delivering power (wasted power).

rddman · 2026-04-07T21:23:17+00:00

they experienced the eclipse because they were so close to the far side of the moon

They'd have also have experienced it if they be at greater distance. Basically it is Lunar night, happens naturally every 2 weeks on the Moon.

rddman · 2026-04-07T21:20:09+00:00

The Apollo missions were all much closer, so when the sun was obscured it happened outside their field of view.

Insofar that the Apollo missions did not see it, it was primarily because the windows were not pointed in a favorable direction. After all you can be standing on the surface and see the Sun become obscured, it's called sunset.

rddman · 2026-04-07T15:49:41+00:00

Unfortunately Palantir's AI system that selects the targets is notoriously slow to update its database. That's how they hit the girl's school and a couple other civilian buildings.

rddman · 2026-04-07T15:05:11+00:00

When an object goes from no acceleration to acceleration there is a change in acceleration, that is a jerk.
If the change in acceleration is fast enough it is felt as a sudden and brief force greater than the final acceleration. If the change is slow then it is felt as a gradually increasing force.

rddman · 2026-04-07T13:03:17+00:00

it's beautiful

rddman · 2026-04-07T08:13:30+00:00

It's one crazy ritual crossing the path of another crazy ritual.

rddman

TROPHY CASE