Everything should just be in eV. Particle physics natural units are the best.
Rocket scientists be like:
Fuel efficiency: seconds.
Mass in seconds? How? I get mass in Joules, but seconds?
There are two possibilities I can think of:
- Orbit duration can be used to calculate mass
- The diameter of a star or the parallax distance on the sky (in arcseconds) can also be used to evaluate mass
Size doesn’t say much about mass though.
I thought stars of similar masses were also of similar sizes. They’re not?
I’m no astrologer but from what I’ve learned, we also need to look at the color to glassify stars into categories. It varies a bit though in each category so it’s a blunt tool.
Then there are other objects like gas clouds and even galaxies. For those, we have no idea of the density distribution, so radial size gives us even less info.
Fun fact: Seconds are called seconds because the first breakdown of an hour is the minute, and the second breakdown is the second. Don’t ask me the obvious question(s) because I don’t know.
If by obvious question you mean “why is it called a minute,” that is because “minute” means “small.” So you have the first minute (small) part and the second minute part of the hour.
Wait, how do you measure mass in seconds?
Also angles
Would love to hear how mass is measured in seconds though
Set G = 1 and c =1. Then equations like r = 2m make dimensional sense.
My brother, that explanation is not nearly dumbed down enough and as with most math wiki is useless for eli5 stuff.
I think a lot of people understand the concept of light-seconds, which can measure distance in seconds.
Allow me to introduce the gravity-second. 1 gravity-second of mass-energy is enough mass-energy to have a Schwarzchild radius of 2 light-seconds.
I get what you’re saying but am still too dumb to understand it lol
Size of a black hole.
Certain mass = certain distance
Distance = seconds
Therefore mass = seconds
Then I don’t even want to be in same solar system with millisecond heavy object.
You most certainly don’t, that’s a radius of about 300km (186 miles) and a mass of 101 suns.
Even if you meant microsecond, that’s 1/10 of the sun, and would be very disruptive.
angle: seconds
Rads. But radians are fine too.
Tau (τ). A full circle is just 1τ instead of 2π.
Yeah, but everything else is more annoying. 1+e^i(0.5τ)=0 just doesn’t hit the same
Euler’s identity with tau simplifies to:
eiτ = 1
So it’s actually simpler. See: https://tauday.com/tau-manifesto#sec-euler_s_identity
Sure, it’s simpler; but it’s less elegant
