PckMan
PckMan t1_j22xzcy wrote
Reply to ELI5: How does "acquired taste" work? And how are some tastes able to be acquired no problem, while others will never be acquired? by PuzzleBrain20
There's not really something that separates acquired tastes from non acquired tastes. There's foods or drinks that are almost universally loved that some people just don't like. It mostly has to do with a diversified palate. If you eat something that's very different from everything else you've ever tasted, chances are you won't like it the first time. It's why we "acquire tastes" as we grow older.
PckMan t1_j22xfca wrote
Reply to ELI5 What is the purpose of continuously spinning a lasso before throwing it? by Asian_1nvasion
Spinning it keeps the loop open and maintaining the same orientation. If someone didn't spin a lasso it would just be a limp rope. If the loop isn't open it can't catch anything since the target has to pass through the loop
PckMan t1_j20y8xf wrote
Technically both are correct. The more food you eat, the more energy you get. Professional athletes eat a lot of food because they have high intensity work outs every day and they need a lot of energy. If however someone eats a lot but doesn't use the energy the food offers, then our bodies create adipose tissue, fat, which essentially stores this energy to be used at a later time. The problem is that if you live a sedentary lifestyle and you eat a lot you never use up this fat, since the body will always prioritise freshly consumed food over fat deposits, so in order to lose the fat you either need to require more energy than your food provides, as in working out but at the same time regulating how much you eat, or not eating at all, which is dangerous to do since aside from energy we also get nutrients and vitamins from our food.
Moreover how much fat your body creates and how much it burns is also affected by other factors since everyone's body and metabolism may work differently. Some people get fatter easier than others. In general it's good to have an active life style and walk often, work out at least a few times a week. Not everyone has to be a ripped demigod but a sedentary lifestyle can be really damaging to health, and becoming obese on top of that makes it even worse since it contributes to a host of health problems, mainly heart problems but also joint problems, respiratory problems, dermatological problems and many others.
PckMan t1_j1ylt5o wrote
We have machines that can measure how well an eye sees. You might have used one if you've been to an opthalmologist, you know that big one you rest your chin on and look into a hole and you can see an image inside that may shift as the doctor makes adjustments. Last one I used had a picture of a hot air balloon in a field. However what that machine does is send light into your eye and see how it's received and sent back at the machine. We know what a good eye is supposed to be like, how the lens is supposed to focus light on a specific spot inside the eye and how our iris is supposed to move to compensate for different light levels. If your eye ball has the wrong shape, or your eye lens has the wrong shape, or your iris is not functioning properly, the light is not hitting the right spot inside your eye and your vision is impaired.
Given that this is a completely non invasive procedure, and it doesn't really require feedback from the patient despite the fact that opthalmologists may ask questions anyways, it's possible to use it on infants as well, with probably the hardest part being holding their attention long enough to make proper measurements.
PckMan t1_j1dbyol wrote
Well, basically, they made a bunch of swords. It's a testament to Rome's administrative and economic power at the time that they were able to do that. They didn't always do it and the number of equipment produced as well as its quality fluctuated throughout the years but basically they were in a position few other empires, kingdoms and states were where they could produce so much equipment for their army. They still had soldiers who were equipped less well than the rest, most soldiers did not have armor, and for most of Rome's history, soldiers had to pay for their gear out of their own salary rather than being issued from the state, though that did happen for a period.
That being said despite most soldiers having a sword the spear always was the main infantry weapon for pretty much all armies, or if not a spear, some sort of pike or other polearm, pretty much all the way until firearms were widely adopted.
PckMan t1_j0un1c9 wrote
Reply to comment by TheNotSoGrim in Greek Hinduism - any surviving legacy? by Isabella1293
The ancient world really did rely heavily on exchange of knowledge. Very few people travelled and fewer still had the ability to effectively pass on knowledge. You can actually very easily correlate the technological and general knowledge level of populations to their proximity to major trade routes. It also shows when populations which were isolated how much their growth and development differed, but it also makes their own discoveries that much more impressive. For example the Polynesian peoples who travelled the pacific may seem primitive even compared to their contemporary civilisations, and especially as time moved on that they didn't progress at the same rate. However when you think about the fact that they lived on small islands with limited resources, and all they developed they did so in isolation, their feats are remarkable, especially in navigation and shipbuilding. They sailed the open ocean, and the Pacific at that which is a very challenging ocean to sail, and managed to find tiny islands in its vast expanse to colonise, something that would have been a challenge to many other great maritime civilisations for centuries to come. To this day most sailing vessels use construction techniques those people originally came up with.
PckMan t1_j0q0f8n wrote
Reply to Greek Hinduism - any surviving legacy? by Isabella1293
A great example is the japanese god of wind Fujin. Fujin is always depicted holding a bag which holds the winds slung across his back. This is very similar to how the Greek god of wind, Boreas, was depicted, and it is not a coincidence.
As per the wikipedia article
>The iconography of Fūjin seems to have its origin in the cultural exchanges along the Silk Road. Starting with the Hellenistic period when Greece occupied parts of Central Asia and India, the Greek wind god Boreas became the god Wardo/Oado in Bactrian Greco-Buddhist art, then a wind deity in China (as seen frescoes of the Tarim Basin; usually named Feng Bo/Feng Po - "Uncle Wind" - among various other names), and finally the Japanese Wind God Fūjin. The wind god kept its symbol, the windbag, and its disheveled appearance throughout this evolution.
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Basically this god travelled through all of Asia and was adopted by multiple civilisations reaching as far east as Japan. Looking up the iconography from any one of those civilisations and the similarities are obvious.
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Another fun little tidbit I like, but which is not exactly related with religion but does pertain to cultural exchange due to Ancient Greek conquests of Asia, the Nepalese Kukri knives which are very well known symbols of Nepal and hold much cultural significance are most likely descended by the ancient greek Kopis sword which probably made its way there through Alexander the Great.
PckMan t1_iyevdwk wrote
Reply to Tatooine has two suns, yet the objects and inhabitants of the planet do not cast two shadows. by wfezzari
Since they're so close together they more or less work like one. They're a fair distance away from the planet they're not field lights.
PckMan t1_iy4i87e wrote
The vast majority of space rocks crashing down towards Earth is vaporised into dust by the immense temperatures generated by the friction with the atmosphere. Pieces rarely reach the Earth's surface and they're usually tiny if they do. That being said bigger meteorites do impact the Earth, like the one in Russia a few years ago, usually though they fall into the ocean.
There are craters on the Earth too, it's just that most of them are not easily visible since they're usually overgrown with trees and plants. By contrast the moon has no atmosphere or an active eco system so not only does it get a lot more impacts but all the craters are very easy to see.
PckMan t1_isyuwp5 wrote
Reply to IAmAn Irish guy who worked as an extra and got speaking parts in 3 Chinese blockbusters last year, Battle At Lake Changjin 1 & 2 and Wandering Earth 2! by JayCroghan
I never knew being a movie extra would be so much like being in the military, and I'm not saying this due to the training you underwent.
Overall sounds like a great experience and the money's decent enough. It's also nice to know that not all productions treat staff so horribly.
Very likely you'll be called again sooner or later, will you answer the call?
PckMan t1_j231hxg wrote
Reply to ELI5 why do electric vehicles have one big battery that's hard to replace once it's expired, rather than lots of smaller ones that could be swapped out based on need (to trade off range/power/weight)? by ginonofalg
These huge batteries are made of smaller batteries. Making them modular would make them heavier, bulkier, and possibly more dangerous since at any one point someone could tamper with them and do something wrong and cause a huge fire risk, whereas sealed batteries can have more compact wiring and are considered bad and in need of replacement if there's any damage to them. That might seem wasteful but the fire hazard is big.