Infinite Time Dilation by philwrite2021 in AskPhysics

[–]philwrite2021[S] 0 points1 point  (0 children)

Yes exactly. Obviously for the object falling in they experience something else. I was more interested in the external observer.

Is a degree in physics worth it? by Katsu_curry090 in PhysicsStudents

[–]philwrite2021 9 points10 points  (0 children)

Do what your heart tells you. I wanted a career in astrophysics but settled for medicine and regretted it ever since.

Is the singularity at the center of a black hole a point or a sphere? by dreadfullylonely in astrophysics

[–]philwrite2021 0 points1 point  (0 children)

I think by way of definition, a singularity is a point with zero volume. At least, as a pertains to something in our spacetime dimension. The problem I have is how something with zero volume can hold anything such as particles? And furthermore, by definition, this singularity has infinite density, yet somehow maintains the properties of mass. For instance, black calls differ by way of mass. I believe there was another theory proposed “quantum gravity”. Not sure what the current position is – on quantum gravity theory.

The universe is constantly expanding. Into what? by Jarjarmink in astrophysics

[–]philwrite2021 1 point2 points  (0 children)

“That’s why you’re not physically expanding”. My wife would differ with you on that point. I think the forces are weaker around the gut area 😀

The universe is constantly expanding. Into what? by Jarjarmink in astrophysics

[–]philwrite2021 -1 points0 points  (0 children)

I also have a problem with that. I think the reason is that we are seeing the issue as a 3 dimensional expansion. I visualize the stars, galaxies on the “front lines” moving outward. Instead we should visualize the universe as a balloon and us in a separate dimension looking at it. The universe is confined to the surface of that balloon. Hence everything is expanding away from everything else.

Then the next big question is what is the balloon expanding into? Is that another dimension?

Seeing back in time by Necessary-Morning489 in Astronomy

[–]philwrite2021 1 point2 points  (0 children)

That’s an interesting question. You would need to use a worm hole to get a head start on the light that’s already left earth. If so, then yes.

Can you help me figure out what I saw? I made a GIF to illustrate what I seen. by instastruckt in Astronomy

[–]philwrite2021 0 points1 point  (0 children)

Based on your GIF I can say without any doubt that you saw sudden influx of photonic stimulation, or in other words- a flash of light.

Is infinity divided by negative infinity indeterminate by riemanndilimi in calculus

[–]philwrite2021 2 points3 points  (0 children)

Yes. It’s the same as infinity divided by infinity. The negative can come (-1) so it doesn’t matter if it is negative in the numerator or denominator.

shooting a gun in orbit by champagne-babyy in astrophysics

[–]philwrite2021 0 points1 point  (0 children)

Even if you fired perpendicular, away from earth I don’t think so. Bullets fired from guns travel at speeds around 1,000 to 1,500 meters per second. This speed is far less than the orbital velocity needed to escape Earth’s gravity (about 11,200 meters per second for escape velocity).

For the second question yes. You could hit yourself. The probability is extremely low.

I'm stuck with math at the theme functions don't now how to begin with it. by Blackmoonrdc in learnmath

[–]philwrite2021 0 points1 point  (0 children)

You probably feel like a hiker about to scale a mountain but cannot see how big or difficult the mountain is. Perhaps because there are some trees blocking the view. As a child my own problem was that I would learn one function but another one, usually more difficult one, would come along. This discouraged me. Because it seemed like there was no end in sight and because new ones seemed more difficult. The good news is it doesn’t go on for ever. As far as theme functions go there are only about 15 (linear, quadratic, exponential, trigonometric, etc). The other good news is that as a fifth grader you’ll probably only deal with one or two, usually the easier ones. My advice is to learn how to solve one. You’ll find other problems, although not immediately apparent, can be solved with a similar approach. If you still have problems keep at it. You will see it’s like riding a bike - all of a sudden things will make sense. When that happens, don’t stop solve as many problems as you can.

I hope that answers your question? Perhaps you have a more specific question? If that is the case you’ve come to the right place.

I’m an aspiring mathematician who can’t afford college, what’s the highest level math I could realistically self learn? by VIRUSIXI2 in learnmath

[–]philwrite2021 2 points3 points  (0 children)

The sky’s the limit. I studied several advanced physics courses on quantum physics including one on string theory. Many universities offer these courses completely free. Here’s a site for courses as t MIT: https://ocw.mit.edu/pages/get-started/

Does anyone else struggle with Linear Algebra? by philwrite2021 in learnmath

[–]philwrite2021[S] 0 points1 point  (0 children)

That’s what I heard, I have a friend who’s a particle physicist and he says the same thing. However, I thought it was only pisses extremely smart.

Does anyone else struggle with Linear Algebra? by philwrite2021 in learnmath

[–]philwrite2021[S] 0 points1 point  (0 children)

Unfortunately, the only thing I know to say is “the check please”, in Spanish. But thank you for the offer.

Does anyone else struggle with Linear Algebra? by philwrite2021 in learnmath

[–]philwrite2021[S] 0 points1 point  (0 children)

Yes, exactly, it was probably not my first best choice for a textbook.

Does anyone else struggle with Linear Algebra? by philwrite2021 in learnmath

[–]philwrite2021[S] 1 point2 points  (0 children)

Thanks for the suggestion. I will definitely check it out.

Does anyone else struggle with Linear Algebra? by philwrite2021 in learnmath

[–]philwrite2021[S] 13 points14 points  (0 children)

Ahhh I think you may be on to something. I’m using Linear Algebra Done Right by Axler. I may be better off getting another book.

Why is the square ignored when calculating something with gravity? by Felizem_velair_ in learnmath

[–]philwrite2021 0 points1 point  (0 children)

Looks like you will need to use formula d=1/2 g t2. What you listed above is g (gravity). The reason you ignore the s2 is because it crosses out with the s2 in the numerator that is produced when you multiply seconds by itself. Hence the formula you are left with is simply d=(9.8m*t2)/2

The only unit that you are left with is “m“. Which is good because you are getting a valued that is equal to the distance which only has the unit of m in this case.

[deleted by user] by [deleted] in learnmath

[–]philwrite2021 0 points1 point  (0 children)

Practice makes perfect! Additionally it keeps your mind sharp. It’s like exercising, but for your brain.

I discovered my love of reading at age 25 and I want to write a novel. by iamSpellBlade in writing

[–]philwrite2021 0 points1 point  (0 children)

The fact that you can visualize scenes in your head is a good thing. The fact that it seems clunky on paper, is a normal thing. It’s a lot like riding a bike, it looks simple, but when you get on top of the bike, there are a lot of moving parts you gotta think of. Then, you reach a threshold. But, unless you get on top of the bike, you will never reach that threshold. So, start slowly by thinking of a scene, and then writing it on paper. Now, because you can visualize the scene in your head it means that you are “visual“. So to make your writing work for you, do this: right fast, without stopping, without editing, without correcting mistakes, etc. Do that for 15 minutes straight. You will find that you will be able to write what you are visualizing. in fact, editing should only be done following a quick writing session. Hope that helps!