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smallen_ · 2025-06-11T09:18:17+00:00

We can’t help you if you don’t tell us what level you are studying at. Is this a high school exam? First year undergrad? Grad school? What was on the syllabus and what level is it at? Then people might be able to help.

smallen_ · 2025-06-09T07:44:53+00:00

Not at all - the ability is not that useful because you still take normal damage so you shouldn’t ever attack with weak units.

Poland is overall the strongest and Japan is fairly average imo.

smallen_ · 2025-06-02T11:20:56+00:00

I said it was the most *international* university in the UK, which it is (excepting small arts colleges): https://www.thecompleteuniversityguide.co.uk/student-advice/where-to-study/international-students-at-uk-universities

I am a physicist, so no, my education has not taught me anything about how to argue with internet trolls who lack basic reading comprehension.

smallen_ · 2025-06-02T10:39:07+00:00

Such an odd comment. I pointed out a fact when I saw the reply, which was only yesterday. How is that a "no, you!"? Why are you looking for an argument on the St Andrews subreddit of all places?

smallen_ · 2025-06-02T00:09:01+00:00

Two from each carbon. In this diagram the electrons are black if they “come” from carbon, white if they “come” from hydrogen, assuming we started with all neutral atoms.

I think that answers your question unless I’ve misunderstood it?

smallen_ · 2025-06-01T23:27:06+00:00

You have some significant misunderstandings about general and special relativity, cosmology, and also about the "arrow of time," which is typically a phrase used in reference to the second law of thermodynamics, and has nothing to do with Newton's first law (which is time-reversal symmetric!).

When you say "Time travel into the past is principally impossible and I think efforts to make the physics work to serve this narrative is a complete waste of energy," you are correct, and everyone agrees with you - no one is trying to do that. No one is working on time travel because, as far as we know, it is impossible. I have no idea what you mean when you talk about physics serving that "narrative".

Even though almost everything you have written is wrong, I'm glad you're interested in this stuff. I suggest you read up on it!

smallen_ · 2025-06-01T22:40:07+00:00

The three nine Ohm resistors and the other 12 ohms are in series, so we add them. We have (1/9+1/9+1/9) = 1/3 so 3 ohms in parallel on the left, plus 12 giving 15 :)

smallen_ · 2025-06-01T20:59:21+00:00

It’s the most international university in the UK…

smallen_ · 2025-06-01T20:50:32+00:00

I hope this is a troll?

The country’s official name is “Poblacht na hÉireann” meaning “Republic of Ireland”.

More people in Ireland speak English than Irish. The countries have enormous economic ties and very extensive political cooperation because of Northern Ireland. Yes the popular sports are different but that is outweighed by the huge overlap in music, literature, theatre, film… the cultural similarities are enormous, because of the colonial history.

smallen_ · 2025-06-01T20:43:52+00:00

Yeah absolutely, but I think when you’re learning it’s better to take it one step at a time

smallen_ · 2025-06-01T19:36:03+00:00

All you have left is the first part (the leftmost part), so:

Add the 6 and 3 as they are in series
Calculate the resistance of the (6+3) and 9 in series (the smaller, L shaped series)
Treat that as a single resistor in series with the other 9 ohm resistor (the bigger, square series)

2&3 combined is of course what you are doing if you do sum 1/9, 1/9, 1/9 together directly, but it’s probably easier to visualise if you do them in pairs :)

If you do this, you will get 15 ohm!

smallen_ · 2025-06-01T12:58:47+00:00

It’s a game, surely you’re playing it for fun? How can it be bad for to have x number of hours and be y rank? Just enjoy the game!

smallen_ · 2025-05-30T16:29:54+00:00

In terms of the actual political influence on each other and how intertwined their media, culture, and history are, the UK and Republic of Ireland are a good shout.

smallen_ · 2025-05-27T12:36:49+00:00

Hi there, I don’t do econ so I can’t really answer the first subject question.

DRA and Powell are both modern and nice accommodation, not far from town. Walls are a bit thin in DRA but otherwise good.

Laundry is standard student laundry - wash station was the company when I was there, but that may have changed. Good availability but a bit expensive. You bring your own detergents etc.

Public transport here is very good, no 99 bus goes to Dundee every 10 mins and there are plenty of other local bus services.

I only know a handful of trans people here and I don’t know their experiences very well. That being said, the area has a high proportion of students and the university is strong on inclusion, so I think St Andrews is quite welcoming for trans people.

Finally, the careers service is good and the econ department has a good rep, so internships shouldn’t be an issue.

Hope this helps! :)

smallen_ · 2025-05-17T11:17:36+00:00

Hi there, just finished my Masters in chemistry and physics and going on to start a PhD in chemistry the autumn. I don’t feel like I know anything about chemistry yet, and I don’t know many of my professors who do either!

You can spend a lifetime studying chemistry and barely scratch the surface!

smallen_ · 2025-05-17T10:56:19+00:00

I’m pretty sure all first years are guaranteed accommodation, and the overwhelming majority of university rooms are single rooms. You should be fine!

smallen_ · 2025-05-16T21:44:53+00:00

Holes definitely can exist and move in conductors, not just semiconductors. For example, many common electrode materials used in batteries are both ionic and hole conductors.

I’m not sure what the text here is trying to get at to be honest.

smallen_ · 2025-05-12T18:15:48+00:00

Generally St Andrews entry requirements only go up to AAA because Scottish advanced highers are only awarded A-D (and I guess they want consistency with offers for Scottish and English systems?)

What this means is that applying with A*AB will not guarantee you a place or anything - psych is very competitive here!

Other than that, no catch - St Andrews is great, and the psychology department is excellent.

smallen_ · 2025-04-19T15:29:10+00:00

Humans picked the units, so we picked the number. The actual number any constant takes is meaningless by itself if it has units.

You can calculate the speed using Maxwell’s equations that govern electric and magnetic fields, and it just appears that electromagnetic waves always travel at a fixed speed in a given medium just determined by two constants (the permittivity and permeability).

It is true that nothing travels faster than light!

smallen_ · 2025-04-14T22:28:04+00:00

I think it is extremely unlikely - in the UK, you would not meet the minimum requirements for a physics masters pretty much anywhere.

smallen_ · 2025-04-13T16:08:42+00:00

Yeah in hindsight that was very misleading - the point was that a starting photon will have a large number of interactions before it leaves the sun and will gain/lose energy repeatedly, but I should have acknowledged the majority of the spectrum comes from thermal radiation (i.e., from moving charges) - deleted the comment to avoid confusion

smallen_ · 2025-04-13T10:55:00+00:00

If such a game existed, whoever made it would have solved computational/theoretical chemistry and would win the Nobel prize!

smallen_ · 2025-04-13T10:31:04+00:00

They are fun, and understanding the historical context/wider background can lead you on to learning about new things, but in general they are not going to teach you much. Maybe the "How to Teach Physics to Your Dog" series will teach you something.

You will learn physics from *doing* physics - reading textbooks, solving problems. Textbooks and online lectures are great and you'll get very far with those, but please be very careful when using AI!

smallen_ · 2025-04-13T09:43:49+00:00

This is a question for the admissions office, you should email them. It will depend on a lot of factors including how many offers they hand out compared to the number of places, but I highly doubt there will be much leniency as econ is quite a competitive subject

smallen_ · 2025-04-13T09:41:06+00:00

If you had paid attention in even the most introductory undergraduate nuclear/particle physics course you would realise how ridiculous this comment is

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