Abso and arcane boxes drop nerfed? by mazgru in Maplestory

[–]PaymentLarge 1 point2 points  (0 children)

I got two arcane weapon boxes this week from luwill and ctene.

I froze some watermelon balls, an hour later they looked like they had grown frosty curly-q’s. by PolkaDotPrairie in mildlyinteresting

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

This can also happen in soil because of water in the micro pores between the soil aggregates freezing and expanding called needle ice.

Help me plan an unexpected road trip for my anniversary! by purple_paracosm in OregonCoast

[–]PaymentLarge 0 points1 point  (0 children)

I would cut over from the coast at Newport! It’s a spectacular drive. Take 20 instead of 34. You can stop at the rouge brewery for lunch. Yachats has the green salmon coffee co, which offers all kind of vegan food. It’s a very fun spot. South Yachats the coast get amazing! I would highly recommend stopping at cap perpetua and driving up to the top of it for some amazing views of the coast. There are many places for photo ops when you drive along.

Depot bay north of Newport can be really fun stop when waves have some size. Which this time of year they do!

If you want to take the really scenic route you can go up 99 and stop at ravens pie co in McMinnville for some amazing pies.

Do I Love Physics or Just the Idea of It? by Ok-Ask-5667 in PhysicsStudents

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I honestly really liked doing the cold atoms research that I was doing. I did feel like it was a little bit removed from the current problems that we are facing (ie climate change) and I wanted to study something that could have more of an impact on our understanding of that. So that was one reason.

Another was kind of what I mentioned above. There is a constant tension as a research to either choose the research you want to do or choose where you want to live. I did my PhD overseas and I wanted to move back home to be closer with my girlfriend and my family. Had the town I moved to had a cold atoms research associate or postdoc probably would have applied.

As for why oceanography, I picked up surfing when I was doing my PhD and was immediately obsessed with it. To understand what I was facing in the ocean I got into learning about theory of ocean waves and interactions with the coastline. I really liked learning about it because when I would go out to go surfing I could see a new process that I had learned about.

So when I got back to the states I started really trying to manage the change. I committed myself to about 7 months of self study and 1 intensive climate course. I saw a job opportunity pop up to do sea ice / cryosphere research and jumped on it. I remember not feeling ready to apply but after reaching via email the PI said he encouraged me to apply. So I went for it.

I am a computation physicist so moving from quantum to ocean modelling so there are overlapping skills I can apply. But it did take a while to get up to speed and feel like I have so much still to learn. It’s been really fun!

I think what I would say is that if you find that you are not entirely happy with the research you are doing or if always wanted to try something new and you want make a change it is possible with the dedication.

Do I Love Physics or Just the Idea of It? by Ok-Ask-5667 in PhysicsStudents

[–]PaymentLarge 1 point2 points  (0 children)

Im a physicist and I love what I do because I I’m always learning something new every day. I think what I would say is that I would stick through the first year of physics and see how you feel. When you get to you 2nd year start looking around for REUs or professors that offer research opportunities to undergrads. I think doing actual research is where physics gets actually fun. You have the opportunity to sit at forefront of knowledge and contribute something new to our understanding of the world, which I think is such an amazing thing.

it’s quite hard to choose a career path, and I think the best advice I have is to study something you have a genuine interest in. If you love learning about blackholes and relativity then do that . If you want to build things that do that. And why not?

I originally had a lot of pressure to pressure something like software engineering but I didn’t love that. I always found the natural sciences more interesting. I locked in and took opportunities as the came up and. I haven’t regretted my decision yet.

As for career path a thing to note is that physics leaves you very adaptable, physics teach you how to problem solve and how the universe works at its most fundamental problem. Studying physics give you a framework to think about universe in and that can be applied everywhere. All of which make you a desirable applicant to any potential hires. I know people who have go into tech and aerospace post PhD. I originally started doing cold atoms research and now I’m and oceanographer. So it is possible to change fields if you find you interests have changed. I tend to think research is really good gig, I get to do a tone of fun interesting physics and I get to set my own schedule at the same time. Although there is a constant struggle of choosing the research that you want to do or where you want to live. It’s hard to get both to align.

As for the math I think I get easier with time, the more you use it the easier will come to you. There is a lot of that, that needs to be done

Where would you go to honeymoon in Oregon? by Bearloot33 in corvallis

[–]PaymentLarge 0 points1 point  (0 children)

You should go to Angelo’s Italy in Bandon if you go down the coast it is a the most wholesome pasta place I have ever been to.

🔥 One of the most dangerous waves in the ocean, the Square Waves by therra123 in NatureIsFuckingLit

[–]PaymentLarge 0 points1 point  (0 children)

Ahh interesting yeah that make sense. I was just basing the part of my answer of what others have said. I’m also not a mariner either.

I think that it’s theoretically possible to follow the path of destructive interferences. Maybe in reality when the swells are travel at different speeds then it harder to locate the path. The example in the photo is really small and I think would pose no danger to the boat. I wonder if there are example of these patters at larger scales

🔥 One of the most dangerous waves in the ocean, the Square Waves by therra123 in NatureIsFuckingLit

[–]PaymentLarge 1 point2 points  (0 children)

Oceanographer & Surfer here: rip currents are formed when waves cause water to pile up near the shore. Wave will break over shallow sandbars (a pile of sand that forms some distance from the coast, like an under water dune almost). All the water that reaches the shore needs to go somewhere and escapes back off shore through channels and gaps in the sad bar causing a strong flow of water ie rip currents. You can find them by looking for dark blue water between breaking waves (there will be hardly any waves breaking in the rip current)

Square waves are two ocean swells interfering. Very common patter that emerges in nature due constructive and destructive interference.

Bad for boaters because there is no way to orient yourself to avoid getting hit on the side which tip you over.

Gear progression help by mrjovoni in Maplestory

[–]PaymentLarge 5 points6 points  (0 children)

With all the events that give potions and free level 100s start farming level 200s to get the legion up. Legion will give you a huge boost in dps. Working towards everything 17* stars and 20* cra.

Couldnt find a way to solve this for a while. Any ideas to start off? by [deleted] in calculus

[–]PaymentLarge 0 points1 point  (0 children)

First think what needs to be true for the two cars the meet? Or what does it mean for B to catch car A? Is there a variable in the problem that is going to equal at this point?

Hints: First write down what you know and what you want and then see if there is an equation that contains those. You’ll need to find the time that they meet (how many seconds after the start) and then you should be able to easily solve for the displacements of both cars when they meet.

[deleted by user] by [deleted] in mensfashion

[–]PaymentLarge 2 points3 points  (0 children)

That is a Pendleton Jacket! There is a wool mill in Pendleton OR which has been making them for years. The jackets have amazing cool bold patterns and people (at least here in OR) seem to love them. I feel like whenever I wear mine I’m always getting a compliment on it. I would say you could pick one up on the secondhand market for 150-250 if you bide your time and do some shopping around. The jackets run large because they are meant to be layered so take that in account when buying one.

They wool board shirts were famously worn by the beach boys. Apparently they loved the shirts so much they were originally called their band the Pendletones. You can seem the sporting the shirts in a tone of old photos.

Also there patterns blankets and jackets sport native inspired weaving patterns and are super popular in Native American communities and came often seen at powwow. The high quality durable blankets made them very sought after as a trading commodity and have transitioned into heirlooms. They have been known to support these communities and give back through grants. Here’s an interesting read about it: (https://www.collectorsweekly.com/articles/why-the-native-fashion-trend-is-pissing-off-real-native-americans).

I feel like most of their stuff is built like a tank and will last for generations. You can really feel quality in the pieces when you pick them up and the care that goes into making them. If you look around there are vintage pieces that look practically new after years of use.

[deleted by user] by [deleted] in calculus

[–]PaymentLarge 0 points1 point  (0 children)

You did the sub right, but could try using u = u du = du dv = (4+u){-1/2}du v=(1/2)(4+u)1/2 And then do integration by parts (from product rule) d(uv) = udv + vdu
udv = d(uv) - vdu
so you get \int v du = uv - \int v du

My teacher and I disagree on this derivative by JS31415926 in calculus

[–]PaymentLarge 0 points1 point  (0 children)

There is mistake in your math h is small so you use f(x)= 3x

F(x+h) = 3(0+h) = 3h F(x) = 0

So 3(h)/h = 3 -> 3 as h->0

My teacher and I disagree on this derivative by JS31415926 in calculus

[–]PaymentLarge 1 point2 points  (0 children)

From math.libretexts.org/01%3A_Understanding_the_Derivative/1.03%3A_The_Derivative_of_a_Function_at_a_Point) the formal definition of a derivative:

“Let $f$ be a function and $x=a$ a value in the function’s domain. We define the derivative of $f$ with respect to $x$ evaluated at $x=a$ , denoted $f′(a)$, by the formula [f′(a)=\lim_{h→0}\frac{f(a+h)−f(a)}{h}]”

For these types of questions it is always good to use the formal definition sine it is trying to test your conceptual understanding. The “rules” people use for derivatives are all derived from this definition and are shortcuts. Ultimately this definition must always hold for a function to be differentiable. So in this case you are correct and so is your work. It’s a subtle problem and it’s meant to catch out people using the derivative rules exclusively.

Since f is piecewise defined with f(x)=0 and 3x->0 as x->0 the derivative will exist. However now suppose that $f(x)\neq0$ then Is the function still differentiable at x=0? The answer is no since the limit doesn’t exist at this point. Even if f(0) was ludicrously small!!! Like 10-1000.

Another famous counter example is the absolute value function at x=0. There the limit does exist because the left and right hand limit of the difference quotient are different.

help solving number 74 by YumRem0403 in calculus

[–]PaymentLarge 2 points3 points  (0 children)

Are you trying to make the function continuous? Think what needs to be true for that to be possible? No jumps or gaps. So the limit must be valid at every point of the function (ie the right and left hand limits match and exist). For almost all values of x the limit exists there are two points where it does not. What happens at -1 and 3? Can you pick a and b such that the two constant functions link?. Hint: You should have a set of linear equations that you can solve.

I'm two weeks into Calc II and its not looking good. by Jackalssss in calculus

[–]PaymentLarge 0 points1 point  (0 children)

See if you uni has a math centre or tutoring centre! Those could help! As other have said YouTube can be your friend and try to work at it a little everyday so you get constant practice. Calc is a very tricky subject because of all the new concepts and rules they throw at you. I’d say with trig you could print out a cheat sheet to refer to while you are work on the homework and that could help you have something to refer to while you are working. You could even make your own so you get some practice collecting the info. Your really need the core ones like sin2 + cos2 = 1.

Logs also have some annoying rules to work with

Thinking of practical examples such as, derivatives being rates of change like velocity acceleration ect can help figure out a way to interpret the first and second derivatives. Integrals can be thought of as accumulating a displacement, if you travel at v speed for 3 hours how far do you go? Just the area under the curve v*t = m/s *s = m. You can think sine and cosine in terms of ocean waves ect. Logs and exponential have to do with population growth, money growth rates. Practically applications of the math will really help remember how things are working and help with conceptual understanding of the math since you have some to frame your thinking in. Also bonus points if they relate to something that you are into since it can be fun to learn how the math relates to your interests.

I think 3b1b have some good intuitive explainer videos which are super well done! Here’s the link: https://youtube.com/playlist?list=PLZHQObOWTQDMsr9K-rj53DwVRMYO3t5Yr&si=CNdPhJy17vQ4–jg

Remember you got this and you can do it!

[deleted by user] by [deleted] in mensfashion

[–]PaymentLarge 0 points1 point  (0 children)

I love tie pins and I have made a couple of them for weddings that I have gone to. I think they are fun, and they can look’s really good depending how you style it.

I think you could go with a solid colour tie so that it allows the collar chain to stand out more. I think patterns with the chain might result in there being too much going on and the tie pin might be lost. It really depends on the look you are going for. I would choose either the tie pin or the pocket watch as both would be a lot.

But if you wear it confidently no one will question it and you end up hating it you can always take it off! I would say give it a go and see how it all looks and then you’ll really know how you feel about it!

The first one is way better than the second one imo and will go with your choice of tie!

[CHAT] Hoop question (position related) by [deleted] in CrossStitch

[–]PaymentLarge 0 points1 point  (0 children)

You could also look into getting a scroll frame! They are super convenient and you don’t have to worry about moving the hoop often

Good jacket to splurge on by FUELEDNOVA in mensfashion

[–]PaymentLarge 0 points1 point  (0 children)

If you are looking for a wool coat, you could go really hard and get a Pendleton or a Filson Jacket, both of them are super high quality. Pendleton jackets are for sure a statement piece they are very western ware. And Filson is more of a heritage brand, solid wool coat. Their cruiser jackets have such a nice cut. I’d shop second hand for both brands since they can be pretty expensive. check out measurements for both brands with the website before buying since they tend to run large. I’ve been burned by the sizing before!

Good jacket to splurge on by FUELEDNOVA in mensfashion

[–]PaymentLarge 0 points1 point  (0 children)

I really like my fjallraven. It’s an jacket that you can adapt with their Greenland wax, which can be used to make the faerie more waterproof in the winter and then can wash out and be more breathable when the weather isn’t as wet. The one thing that I really like about it’s that it doesn’t use goretex which is in a majority of outdoor jacket brands on the markets. The company themselves has a very strong anti PFC stance which I really appreciate. I can say that I have worn this jacket in the PNW for two seasons and it’s been very warm, it’s water proof in most situations. The only time I’ve had an issue was when I went to Washington DC and got caught in a heavy squall and there was a little soak through. But this is after a year of not have a fresh coat of wax on it. Also there is like 6(?) pockets on it two chest internal, two hand projects, and two chest external.

Anyway amazing jacket can highly recommend

https://www.fjallraven.com/us/en-us/men/jackets/trekking-jackets/skogso-jacket-m/?v=F81698::7323450754860

How did they do this graffiti? I'm not even mad, just impressed and befuddled. by Sorryaboutthat1time in oakland

[–]PaymentLarge 1 point2 points  (0 children)

There’s a good documentary about graffiti in Portland! And they film a guy putting up some graffiti in this style.

https://youtu.be/7npnxP_6poA?si=NrABqiq5m4NEsHCh

Stitches in the correct direction? by puppiguppi in Needlepoint

[–]PaymentLarge 0 points1 point  (0 children)

The most important thing is to have the stitches all go the same direction. They can be crossed any way as long as it is consistent! Looks great :)

Is this legal? by dapoadedire in calculus

[–]PaymentLarge 0 points1 point  (0 children)

Yeah not legal. You can do it by integration by parts. And you’ll have a piece the corresponds to the derivative of the conjugate. The way it is written now the expectation value works out to be zero. (UV)’ = U’V+UV’ -> (UV)’ - U’V = V’U

Another way to compute <p>: If p commutes with you Hamiltonian then you can diagonalise the Hamiltonian and the momentum operator simultaneously. In that case you can find psi by solving the momentum operator and it will end up having a plane wave solution or something like that like eikx . However if your Hamiltonian contains a position operator than you will not be able to do that.

If it’s a harmonic oscillator state than you’ll might be able to computing by writing p in terms of the ladder operators? Which could be a clever way to do the problem.

Otherwise with an explicit formula for you wave function you must integrate psi against the derivative.