Also angles
Would love to hear how mass is measured in seconds though
this post was submitted on 02 Sep 2024
732 points (98.7% liked)
Science Memes
19344 readers
2242 users here now
Welcome to c/science_memes @ Mander.xyz!
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
Rules
- Don't throw mud. Behave like an intellectual and remember the human.
- Keep it rooted (on topic).
- No spam.
- Infographics welcome, get schooled.
This is a science community. We use the Dawkins definition of meme.
Research Committee
Other Mander Communities
Science and Research
Biology and Life Sciences
- !abiogenesis@mander.xyz
- !animal-behavior@mander.xyz
- !anthropology@mander.xyz
- !arachnology@mander.xyz
- !balconygardening@slrpnk.net
- !biodiversity@mander.xyz
- !biology@mander.xyz
- !biophysics@mander.xyz
- !botany@mander.xyz
- !ecology@mander.xyz
- !entomology@mander.xyz
- !fermentation@mander.xyz
- !herpetology@mander.xyz
- !houseplants@mander.xyz
- !medicine@mander.xyz
- !microscopy@mander.xyz
- !mycology@mander.xyz
- !nudibranchs@mander.xyz
- !nutrition@mander.xyz
- !palaeoecology@mander.xyz
- !palaeontology@mander.xyz
- !photosynthesis@mander.xyz
- !plantid@mander.xyz
- !plants@mander.xyz
- !reptiles and amphibians@mander.xyz
Physical Sciences
- !astronomy@mander.xyz
- !chemistry@mander.xyz
- !earthscience@mander.xyz
- !geography@mander.xyz
- !geospatial@mander.xyz
- !nuclear@mander.xyz
- !physics@mander.xyz
- !quantum-computing@mander.xyz
- !spectroscopy@mander.xyz
Humanities and Social Sciences
Practical and Applied Sciences
- !exercise-and sports-science@mander.xyz
- !gardening@mander.xyz
- !self sufficiency@mander.xyz
- !soilscience@slrpnk.net
- !terrariums@mander.xyz
- !timelapse@mander.xyz
Memes
Miscellaneous
founded 3 years ago
MODERATORS
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.
load more comments
(1 replies)
Rocket scientists be like:
Fuel efficiency: seconds.
Wait, how do you measure mass in seconds?
Time taken for me to eat that mass of hotdogs
Choking_Hazard.txt
Just as particle physicists measure everything in energy (eV to be precise...)
Mass? eV Energy? eV Distance? 1/eV Time? Guess what: 1/eV as well! This also means velocity has unit 1...
And the worst part: it turns out to be extremely useful!
Why is the astrophysicist wearing gloves? Is he trying to dispose of a body?
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.
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
load more comments
(3 replies)
I measure the mass of my stool by seconds it takes to discharge
load more comments
(2 replies)
Me: not smart enough to understand
Brain: Quick! Say something to sound like you fit in!
Me: uh ... I just did the Kessel Run in under 12 parsecs!
But do you remember the Krebs Cycle?
!https://i.ytimg.com/vi/27x0wiuTYoE/maxresdefault.jpg
I'm hungry for more; may I have seconds?
That may be relativists (they would actually measure anything in units of mass, with everything else defined through G = c = 1). Astrophysicists commonly measure mass in solar masses, long distances in parsec (or kiloparsec, megaparsec), short distances in solar radii or AU, and time in whatever is relevant to their problem (could be seconds or gigayears)
short distances in solar radii
I think astrophycisists and I may have a difference of opinion on the meaning of the adjective short
As a theoretical physicist, units are for chumps
It's easy to remember c and ℏ if they're both 1...
Constance? Never heard of her
load more comments
(2 replies)
Everything should just be in eV. Particle physics natural units are the best.
load more comments
(1 replies)
angle: seconds
Rads. But radians are fine too.
If you ever find yourself among theoretical physicists and/or astrophysicists and need a conversation starter, just ask about unit systems or unitless/natural measurement systems. There is no other profession that is more obsessed about that topic.
Just to put this here:
ħ=1
Don't they measure distance and time by redshift (ie colour)
They normally use parallax-seconds, i.e. parsecs, for long distance objects.
load more comments
(2 replies)
Please Sir, can I have some more?
Lash him! Ridicule him! This boy wants seconds!
Acceleration….
Sounds like that reduces to hertz, which I'm sure they'll just express in seconds.
They like to set the speed of light to be 1. That is dimensionless 1. It makes their calculations simpler this way instead of dragging some power of c everywhere like a loosely connected trailer on a dirt road.
When i took a particle physics class we measured everything in energy (eV). In this case of measuring everything in seconds, acceration would be measured in units of 1/s
Can I get a conversation table?
view more: next ›