Looking for casual. Like to throw over sundresses or tank tops, if not wear on their own. Ideally non-boxy items. Am open to styles but prefer a bit of edge. For example, I have a perforated zip-up hoodie that should be perfect, except it's made of polyester so I cook despite the holes. Thanks for any recos!
Before you get all aspergers on me to try to convince me of the stupendous numerical safety of 128 bits of entropy (or let's say more accurately 2048^11*2048/(11-4)), let me just say:
Please do. I love that shit and I love you.
I could have my math and assumptions wrong, but some quick and dirty math (it's singular dammit) says that, going roughly along our current trajectory of computational speed, density, and power gains (with or without Moore's narrow specific principle)...
...in ~150 years armed with a few thousand lines of code and access to a small datacenter, a kid could get into my Exodus wallet. All of it. All of my dozen or so private keys, including the difficult Monero ones. Just by brute-forcing the BIP39 12 word mnemonic seed phrase out of the clear blue sky. Doesn't need to even know me.
But wait, I can hear you objecting already:
- Why haven't you moved to a new wallet in 150 years?
- You seem pretty old already. Don't you think you'd die long before then?
- You really think civilization will still exist then?
As unlikely and whimsical as it is, and as rational as I fancy myself to be, I still get a little - just ever so slightly - squirmy thinking about my damn-near completely offline wallet secured literally (albeit not entirely intentionally) by four layers of encryption (including, effectively, 2FA since one of them is physical token-based), being vulnerable to theft from some state-sponsored group in Russia with a square-mile of GPU and ASIC compute power, stealing every BIP39 wallet they manage to stumble across.
(Which I guess wouldn't be even remotely profitable - other than as a PR to destabilize economies or something. But that's a spreadsheet for another day. With the staggering exponents we're dealing with, even if everyone on Earth had a billion-dollar wallet, I suspect it still would operate at something akin to quadrillion dollar losses in the long run. But I'm just throwing out words. I'm not good enough at math to even just estimate the basic arithmetic on the exponents themselves...gentle nudge...)
Just in case it's not clear - and it isn't always to be sure - I'm not looking for "help" or "reassurance". Just looking for some fun with math. And acknowledging the quirks of human nature that defy logic.
I am studying Biophysics and the books kind of explains the magical properties of water.
I am having a really hard time trying to understand the difference between these two concepts.
If anyone is able to help me, please elaborate.
Whenever I touch something like metal or a marble countertop they always feel much cooler than their surroundings (unless they have been in the sun/exposed to direct heat). Are they actually colder than their surroundings, or does it have something to do with how they quickly wick heat away from my hands? And if they’re actually constantly cooler than the surroundings, how is this possible - wouldn’t the surface temperatures approach thermal equilibrium with the surrounding air?
Hey, this is a question that I wondered when I saw that the specific heats given for common materials on our high school data sheet indicated that it was under atmospheric conditions (273K, 101.25kPa).
Does this mean that specific heat is different depending on the temperature of the substance?
If a substance is heated, does it not follow a linear pattern?
The diagrams we see are all linear and then plateau at fusion and vapourization.
Thanks in advance.
Okay, I'm running into this problem over and over. I'm trying to play on Europa, but... well, every gas I intake is insanely cold. To mix them or do anything with them that doesn't instantly kill me, I need to raise the temperature.
Now, I can cool things quite easily. Heat exchanger to a tank of cold air? Easy. AC? On EUROPA? Easy! Hell, I can even just store a bunch of the exterior air and use radiators. Very easy.
But heating it is completely beyond me, because the concept of a "Water Heater" style tank seems to be impossible. I could, of course, make a 1x1x1 "tank" surrounded by steel frames and run heaters into it, but that would get insanely difficult to space and power.
So what am I missing? HOW are you supposed to heat up gasses without causing explosions or using so much space and power that it's unfeasible?
Which specific capacity of water should I use and in what scenarios?
What, molecularly speaking, is the difference between specific heat and thermal conductivity? Are they related inversely or in any other way, or are they unrelated entirely? I know what they are, the energy needed to heat a sample by 1 degree C and the rate of transference of thermal energy, but on the atomic scale what is happening to make these values different for different materials?
Hi, Someone once told me that to cool down a bottle of beer/coke faster, I need to put it in a freezer wrapped around a wet piece of kitchen paper. I did an experiment and this seems to be the case ...2 bottles both room temp but with one wrapped in wet kitchen roll, after 30 mins the kitchen roll one seemed a lot colder, but what I don't understand is that due to the specific heat of water being quite high (~4200J) - it still in theory should take a lot of energy to decrease the overall temperature of the bottle.
Why does the kitchen roll one get colder faster ?
Why does the specific heat capacity decreases as the salt concentration increase? what is the physics (not chemistry) explanation behind it? I'm doing an experiment where I will measure the specific heat capacity of water with different concentration of salt. Thank you in advance
So Monty has red eclipse eyes which the breeder said are super sensitive to light, and he hasn't been coming out during the day at all - I think the two are related. His tank is next to my window and as such gets natural light during daylight hours. His heat lamp I have now is UVA but I'm wondering if I should get him a no-light ceramic heater I can have on 24/7 for him that also won't hurt his eyes? (I still have a 3% UVB light I leave on during the day)
It's been 20 years since I've had a gecko and admittedly my child self didn't do a lot of things right. I just want what's best for him to give him a long happy life so please if you have heating/lighting advice I'd appreciate it!
I didn't know if this was high school math or chemistry, but I have a question that tells me to identify the mass from specific heat, joules, and a temperature change. I know I should divide something because they're being multiplied in the original specific heat formula, but I'm not sure what I should do and I just wasted 20 minutes googling how to find it only to get nothing. I've already done most of the normal specific heat problems, but this one is the first mass problem, and all the calculators I find online give me crazy answers that could definitely not be correct.
We also haven't been taught the equation for mass, so I'm not sure if she wants us to just look it up or she's expecting us to be smart enough to figure it out ourselves because I'm obviously not. please help?
I want to find the relationship between the two variables( SHC and LoC) , but am not sure how this relationship can be represented in equation form.
My electric kettle with an infuser has a "keep warm" setting which keeps the water at the specific temperature. So when making Green Tea at 175 F, do I keep it at 175 or just infuse it once it reaches 175 and the heat dies?
Ok I'll admit I put the microwaving tea part in to make people from the UK uneasy.
https://twitter.com/flasportsbuzz/status/1330178152493178883?s=19
[Jackson] The Heat, awaiting decision from Crowder on their offer to him, has a specific plan in place to move quickly if he says no, with a specific free agent then to be offered the full $9.3 M mid-level. Can share more on this after Crowder decision.
Maybe Millsap?
Hi all,
A bit of background first - I'm doing some research on interplanetary hypersonic vehicles which fly through the upper atmospheres of planets like Mars and Venus. While the flyby speeds and stagnation temperatures are very high (1000's of K), the atmospheric pressure and post-shock pressures are still quite low (100's of Pa to ~ 50kPa).
I've been playing around with the NASA CEA (chemical equilibrium with applications) code the last few days to try and get a qualitative understanding of what behaviour to expect regarding the gas properties. I've attached some plots here which summarise batch runs I've done over a wide range of temperatures and pressures of interest for a Mars-like gas mixture (95% CO2). There's a peculiarity I've noticed in the equilibrium properties, and before I go diving deep into the user manual and textbooks I wanted to see if anybody here could provide a quick explanation / sanity check.
In particular, I was surprised by the huge peaks in the equilibrium specific heat and conductivity at low pressures. It's not super clear from the images, but at pressures below ~0.3 bar, the smooth and broad bell-curve peaks collapse to narrow curves with very high peaks. To me this suggests that the CO2 dissociation processes happens over a much smaller temperature range at low pressures. Does this have a physical motivation, or is it more likely some quirk at an edge case in the code?
Thanks in advance
https://preview.redd.it/0i61ml11spr61.png?width=1920&format=png&auto=webp&s=c7f4ddd98c04a8c91491051a36a63d098e46158b
Why does the specific heat capacity decreases as the salt concentration increase? what is the physics (not chemistry) explanation behind it? I'm doing an experiment where I will measure the specific heat capacity of water with different concentration of salt. Thank you in advance
