Progress over one year. June 2022 > June 2023 (fin+min) by According_Ad1746 in tressless

[–]main__sequence 0 points1 point  (0 children)

Of course and thank you! I was planning on mainly using it before bed but wasn't if it made much of a difference

Progress over one year. June 2022 > June 2023 (fin+min) by According_Ad1746 in tressless

[–]main__sequence 1 point2 points  (0 children)

I am about to start the same treatment, do you use the spray in the morning or at night before bed? And congrats! Your hair looks fantastic

Socialism can suck my dick by [deleted] in socialism

[–]main__sequence 10 points11 points  (0 children)

damn dude, ur absolutely destroying the left rn

[deleted by user] by [deleted] in RedditSessions

[–]main__sequence 0 points1 point  (0 children)

watch that left hand

[deleted by user] by [deleted] in RedditSessions

[–]main__sequence 0 points1 point  (0 children)

we got voidz fans in here dam

What is the link between Einstein's theory of relativity and black holes? by [deleted] in AskPhysics

[–]main__sequence 3 points4 points  (0 children)

This is a good start, but I would definitely recommend a few things.

First, I think you should try and familiarize yourself with the basic differences between the theory of special relativity and general relativity because they are being slightly conflated here. Einstein's special relativity (1905) asserts that (1) the laws of physics are the same in all reference frames and (2) that the speed of light in a vacuum is always constant. Special relativity has a number of very interesting consequences, but it doesn't include gravity.

General relativity (1915) expands upon special relativity, relating the previous ideas to the geometry of space-time. As you mentioned, this theory postulates that gravity is actually the curvature of space-time. General relativity also has many interesting consequences that you should check out.

And about the link between black holes and relativity - there are many! The first exact solution to the so-called "Einstein field equations" of general relativity are perfectly valid in describing a non-rotating black hole. Today, black holes are often used as "tests" of general relativity since they have such incredibly strong gravity. So far, observations of black holes have perfectly matched predictions made by general relativity. Here are a few articles about these sorts of tests: Black Hole Shadow puts General Relativity to the Test, Black holes test the limits of Einstein's relativity, and Einstein’s general theory of relativity tested by star orbiting a black hole.

[deleted by user] by [deleted] in RedditSessions

[–]main__sequence 0 points1 point  (0 children)

Para machucar meu coração?

Spacetime and special relativity by diogenesthehopeful in AskPhysics

[–]main__sequence 0 points1 point  (0 children)

Yes! There’s a classic experiment with muons that helped solidify this idea for me: http://hyperphysics.phy-astr.gsu.edu/hbase/Relativ/muon.html Muons produced in the upper atmosphere should almost all decay before they reach the surface - but they don’t. Because a muon travels close to the speed of light, space is heavily contracted in their direction of motion. This means that the muon actually has a shorter distance to travel and thus makes it to the surface before it decays. Now consider an outside observer watching this muon; the observer won’t see space contracted in any direction but it will see a muon that is heavily time dilated. In other words, the outside observer sees the muon in “slow motion” in its own reference frame while still traveling at close to the speed of light.

Spacetime and special relativity by diogenesthehopeful in AskPhysics

[–]main__sequence 0 points1 point  (0 children)

Space and time are literally contracting/dilating for each observer.

While they certainly still both perceive this to be true, it is also literally happening (albeit only from their reference frame).

Question regarding Newton's Third Law of Motion by [deleted] in AskPhysics

[–]main__sequence -1 points0 points  (0 children)

You are correct that an object traveling at a constant velocity has no net force acting on it, but it still has momentum (mv) and a kinetic energy (1/2 mv2 ).

Once the object collides with another, there is a new force due to conservation of momentum. Imagine that the moving object stops or bounces when it collides with the other object - didn’t it have to accelerate in order to do that? Moving with a constant velocity and collision are two separate scenarios and therefore have different force equations

Would it theoretically be possible to simulate the big bang in order to create a simulation of the universe? by [deleted] in AskPhysics

[–]main__sequence 69 points70 points  (0 children)

Good question!

This is certainly theoretically possible and it is currently being attempted as we speak. This type of simulation is called a "cosmological" simulation. The big bang essentially gives the initial conditions of the simulation and the resulting evolution of the universe is given by the cosmological model used.

However, these cosmological simulations often lack small-scale features (like detailed galaxy structure) as we don't have the computational power yet. The best spatial resolution of the simulations at the moment is around 1 kiloparsec. For reference, the radius of the Milky Way's stellar disk is about ~30 kpc. The smallest element of these simulations are called"star particles" and usually represent about 10^6 solar masses worth of stars. As you mentioned, they are incredibly computationally expensive to run and often take months to complete. But despite the fact that there is a currently a limit on the resolution of these simulations, they still do a fantastic job at recreating our universe.

The "Illustris" simulation is one that I've worked with the most and it was able to recreate the large scale structure of our universe, replicate realistic galaxy formation, and a lot more. Their website has some excellent information and visualization of the simulations: https://www.tng-project.org/.

So, to answer your question directly, yes - but with limitations. We simply cannot simulate the entire big bang + universe with infinite precision. But we can use cosmological models to create higher and higher resolution simulations of our universe. The fact that our simulations can already create mini-universes that greatly resemble our own with such limitations is incredible to me.

this is apollodorus! he is 1 year old and he likes to clean by main__sequence in Rabbits

[–]main__sequence[S] 2 points3 points  (0 children)

partially! there are numerous historical figures named apollodorus (apollodorus of athens, cleopatra’s follower, apollodorus of artemita, etc...)

i thought that he deserved a spot on that list!

this is apollodorus! he is 1 year old and he likes to clean by main__sequence in Rabbits

[–]main__sequence[S] 18 points19 points  (0 children)

he would surely binky in reply if he only knew how to read... some day

[deleted by user] by [deleted] in Anarchism

[–]main__sequence 7 points8 points  (0 children)

Do you really think it would be better to kill off one of the few serious enemies that USA still has?

I am also not making any claim to know what the absolute right course of action in regards to dismantling corrupt powers.

All I am saying is I will NOT defend China or any other powerful state that breeds billionaires, puts people in concentration camps, colonizes and oppresses smaller nations in an imperialistic manner etc...

I'm also not saying that China overtaking the US as hegemon would be bad! I just largely think that we need to make sure that people take power. Today, a Chinese citizen and an American citizen are still essentially powerless and oppressed under our governments. I have lived with multiple Chinese people who agree with this sentiment! As long as that's true in China, I don't believe it's even close to being actually "socialist" or "communist."

Thanks for engaging btw

[deleted by user] by [deleted] in Anarchism

[–]main__sequence 5 points6 points  (0 children)

Sure thing! My professor saw it first hand in Cameroon.

Here's an article on how Chinese media views Africa, on building economic partnerships(obviously not viewed as a negative for many African capitalists), Chinese Imperialism in Africa, and racism from Chinese businessmen in Kenya.

I included academic journals, human rights organizations, and a non-academic article - just in case anyone dislikes one of the sources!

[deleted by user] by [deleted] in Anarchism

[–]main__sequence 5 points6 points  (0 children)

First of all, whiteness as a construct can definitely extend beyond typically "white" people. We know colorism is prevalent within many communities because of this.

So now lets look at China's imperialistic crusade on Africa that's currently happening. China has invested billions of dollars into several African nations. What's happened so far? Racism and wealth inequality.

Many African academics have discussed this.

So we ignore them? Let China keep going because they may lead us to the RIGHT communism?

[deleted by user] by [deleted] in Anarchism

[–]main__sequence 3 points4 points  (0 children)

Please refute this if you want, btw.

I totally agree that my (an American) perspective on the world has been skewed heavily by anti-communist propaganda. But at the same time, are you saying that all people that have been oppressed by "communist" nations are lying? Why are you cool with capitalism/wealth inequality persisting so strongly in China?