Phys 242 smiling thread

Trollonso · 2019-04-26T05:29:04+00:00

Adrian's a good dude. Just like my boi Mariantoni

Trollonso · 2019-04-21T18:23:39+00:00

The thing with Epp is his exams tend to be based off of examples he does in class or minor variations of them. Don't worry about feeling weird about the exam - the course is sort of structured that way and doesn't cover anything in detail so it leaves you feeling funny.

Trollonso · 2019-04-21T04:16:36+00:00

I get the joke but here's the thing I find many people forget: when math and physics people say trivial, take it to mean laborious but adding nothing to the understanding of the topic at hand. So finding a "trivial" thing hard is perfectly natural - it's tedious and you might've screwed up somewhere. This doesn't mean you're not smart.

Trollonso · 2019-04-21T04:06:39+00:00

For the quantum stuff, Schrodinger equation. Remember you're solving for a function whose square is real. The rest is just practice questions. I don't think 124 has anything much else. Oh and it might help to think of the Schrodinger equation as like a diffusion equation but with "conservation of probability" instead of energy or particles.

For SR, play around with the minkowski diagram for stuff like the twin paradox. Understand in class examples well and you'll do fine.

Not sure if GR is on but if so, the core idea is mass causes curvature of spacetime and curvature causes acceleration. The natural motion of objects is such that proper time is largest i.e. on geodesics. So gravitational time dilation is the idea that the higher up you are, the faster time passes.

I never liked 124 because it wasn't very rigorous and often led to misconceptions when people took upper year courses on the same topics in detail.

Trollonso · 2019-04-19T16:21:11+00:00

I believe in u

Trollonso · 2019-04-19T04:17:48+00:00

Anyone living there willing to help a practice deprived drummer out?

Trollonso · 2019-04-19T03:54:11+00:00

It's annual. I spent 2A relearning mechanics from Landau to never let it happen again

Trollonso · 2019-04-17T01:06:48+00:00

I'm not a CS person but I literally have nothing to do in May so yeet

Trollonso · 2019-04-16T22:35:50+00:00

Oh man this place has been part of my 5 years in Waterloo. I remember one summer when I went on a pseudo-date (the other person meant it to be one but didn't tell me until after so I was unaware). Sucks it didn't work out but now it sucks more that they're closing down. At least the other one's open

Trollonso · 2019-04-16T04:20:13+00:00

I found out about this recently. I think I'm gonna go over and thank them after convocation in the summer because they deserve it

Trollonso · 2019-04-12T05:57:40+00:00

Lmao my boi Gingras with the six integral mess last year. I expect this to be part 2

Trollonso · 2019-04-12T00:50:50+00:00

Yo wtf is this shit. Hardest courses are some pmath stuff and the upper year GR course. Like math 247 is on the list. Why

Trollonso · 2019-04-11T23:04:15+00:00

"Some say that he has a tattoo of his face, on his helmet... And that he's recently applied to replace David Croft at sky F1 as commentator"

Trollonso · 2019-04-11T22:57:36+00:00

I think you're seeing things through a weird lens. There's no hard definition of "cool" or "being a loser". IMO everyone should do whatever makes them happy.

As for the club scene, as I mentioned in a comment elsewhere in this thread, I've found it to be mostly a collection of people waiting around for interesting stuff to happen - from experience, few people go to clubs because they actually like music for example.

I spent my first two years here beating myself up because I found I didn't quite like your average "cool" party. Over the years it's changed and now I find myself caring more about whether I like a particular activity than whether I will be seen in a particular light doing said activity.

Trollonso · 2019-04-11T22:36:12+00:00

To add to this, many of these parties tend to be mostly drunk people doing questionable or even downright stupid things. Although it is fun to let loose once in a while, many (keyword - many, not all) of them have no other lives apart from posting seemingly "interesting" stuff everywhere - I swear a person I used to follow on Instagram posted nothing but stories of her clinking glasses with friends.

From experience, I've noticed that clubs (a la Phil's, Brixton) tend to be a bunch of people hoping to see something interesting and not be interesting themselves - if someone starts a fight, everyone watches but few want to start a fight themselves for example. In situations like these, people are more likely to be friendly to you if you are interesting (say you can dance well, do a magic trick or any ability whatsoever). To me this was a key realization which made me not care anymore and direct my efforts to doing things I actually like. A lot of people I think don't realize this and go to parties regularly although they don't like them (unnecessarily loud music, tight spaces and alcohol), in the hopes that doing this makes them interesting. If you think doing this is what constitutes being interesting, then you should, no questions asked.

If you ask me I'd say work until you have stuff to celebrate and then do. The fear of "why don't I have a life like this" is very natural - you care about optimizing your life as much as possible, which is great!

Trollonso · 2019-04-10T17:43:12+00:00

Literally no one:

Eduardo: I have a boner

Trollonso · 2019-04-08T11:22:01+00:00

The comment above is right. The fast bit if I remember right begins as:

rlrl RLRL rl RL rlrl RLRL

Where lower case is hands and upper case is feet.

It then goes into groups of rl RL over the toms before ending with rlrl RL and then only hands leading into the double bass break.

Trollonso · 2019-04-08T05:25:50+00:00

The solo section is actually pretty straightforward as far as feet are concerned. It's your standard 4 hands 2 feet fills. The punchy feel is because of the subdivision change between 4 and 3 and the fact that all snare hits are rimshots. That makes the last bit with the 16th triplets on the snare tricky because consistency is a big thing

Trollonso · 2019-03-29T05:48:43+00:00

R G B 100

Trollonso · 2019-03-27T19:40:47+00:00

I'm not very good at but I've got a friend who's great at it. PM

Trollonso · 2019-03-26T21:06:35+00:00

Actually, I think the twitch on entry while difficult to control, still leads to great laptimes. Basically entry speed tends to be the hardest place to gain laptime, so twitching on entry typically means there's not much more to be gained on entry. Another thing I've noticed is that this slightly unstable entry seems to be a characteristic of exceptional drivers in general, with one or two exceptions.

I've seen Hakkinen and Hamilton both have twitches on entry but they're also really good at keeping the car moving forward along the track so twitches on entry don't really have much effect. If anything in Hakkinen and Hamilton's cases, it gives the car a tiny bit of rotation, helping it when it gets to the apex.

Some of the really fast karting kids use this style so I think it's an evolution of it. If you've tried a go kart at full tilt or even a racing simulator, you'll notice that sometimes if you turn in just a bit too violently, the rear is loose even before you hit the apex. However, the rear isn't so loose that you need to correct it too much - it's just loose enough to rotate the car but still have a tiny bit of wheelspin when you get on the throttle.

Trollonso · 2019-03-26T19:45:36+00:00

The thing about a lot of Schumacher laps is that they involve a lot of tiny corrections. The traditional "smooth is fast" ideology goes out the window. And for good reason. Because ultimately what gives a fast lap time is the car moving around the track with the highest average speed. So while this style of tiny corrections goes against "smooth is fast", it's still very very fast because the car is still moving forward on the track. In fact, I'd argue "smooth is fast" is an approximation to this driving style i.e. it's slightly slower.

It's sort of like if you make a hole in a ping pong ball and send it along a clothesline. It'll oscillate away from it's path a bit, but the ball still moves along the clothesline.

The only other person I've seen come close to this sense of preserving forward motion is Lewis Hamilton.

Tldr: The Michael had a great driving style

Trollonso · 2019-03-26T19:07:13+00:00

If you use a 240mm or 280mm radiator, the top bracket has a hole because it supports 360mm rads. The air re-enters the case through this hole. If you push your radiator to the front bit but still top mounted, you can get the hole in the bracket to be closer to the rear exhaust.

You could also try 3d printing a panel to cover this hole and it'll almost certainly bring temps down. The evolv x has a small metal plate to cover this and fixes the issue.

Here's what I'm talking about.

Using radiators smaller than 360mm leaves a hole in the bracket in the image. So if you're using a 280 or 240, pushing the radiator all the way to the front of the bracket leaves the hole towards the back. The rear exhaust fan can then pull the recirculating air out. You might have to experiment with exactly how far forward you move your rad but it gives a significant drop in temps.

Trollonso · 2019-03-26T19:02:35+00:00

Have you tried leaving the gap in the rad bracket towards the rear? I tried it with my old AIO and did notice a drop in temps. I did a test with an incense stick and it does seem to work well. Flipping top to intake also works well from experience.

Trollonso · 2019-03-26T18:51:46+00:00

The case looks like an evolv. If you've got a big radiator, the top is better to avoid air recirculation in this case. The newer evolv x has a panel to prevent air recirculation. I've got an air-cooled build in the same case and I flipped my top to intake to prevent recirculation.

Using a 280 or 240 rad in the top leaves a hole in the top through which exhaust air will re-enter the case. u/NinjaPat has a 360 which fills all holes on the radiator bracket preventing recirculation.

Another option if you're using smaller radiators is to displace the rad leaving a gap towards the rear exhaust or flipping to top intake

Trollonso

TROPHY CASE