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An important thing to also keep in mind is a vehicle engine is only called to produce maximum power for short intervals. While farm and industrial equipment may be asked to output rated power continuously for hours. This means for any given displacement you'd expect the farm and industrial engine to produce less power to increase service life and reliability.

Melting temperature and burning temperature are different. Wood actually does have a melting temperature, but it's way past the melting temperature.

Similarly, metals generally have a burning temperature that is well past the melting temperature.

In the middle are plastics with melting and burning temperatures that are close together.

And then there are ceramics. It is technically possible to melt them, but technically they are already burnt... ceramics are weird.

Think of it like coupons vs. promotional gift cards given out by a grocery store. They use coupons in a situation where they want to encourage you to do something (buy X product), but want to limit the cost to themselves—the maximum discount is 100%. This is analogous to a non-refundable credit.

With a gift card giveaway, they’re saying the situation is such that they want to give you more money to spend, because that’d be better for everyone. This would be analogous to a refundable tax credit, which is mostly aimed a people with lower income, because helping them make ends meet and maybe even have a little extra to spend is better for everyone in the grand scheme of things.

Wow that basically explained it perfectly thank you

The eye is meant to image a point of light, for example a star, as precisely as possible on your retina so that you perceive it as, well, a point. And objects, like the text you try to read, will appear sharp if each of their individual points is imaged as a point.

Looking at a bright star without your spectacles you get an idea of how your eyes fail at that task: what should be a point is smeared out in various ways (depending on what opticians call aberrations of the optical system, or how well your eyes can focus, or both). This means that different rays of light (from the same star) entering different parts of an eye are sent not to the expected focus point but slightly nearby, and together adding to a blurry image of what should be a point.

Now by looking through a tiny gap you cut out most of these rays, which makes the blurry patch smaller, more like a point, and improves the sharpness of your vision.

Of course there are limits to that "stopping down": the image gets dimmer and, with a really small gap, the wavy nature of light actually starts increasing the blur again.

Yeah but it’s pretty handy to be able to get to highway speeds in a reasonable amount of time/distance when you find yourself on a short ramp going into dense high speed highway traffic.

Brains are powerful but they are also very energy demanding. A chess player can burn 600 calories for a 2 hour game, equivalent to a 2 mile run.

Basically what happens is that our brains learn to conserve energy and save stress. If you train your brain up to remember details, it will be better and more consistent with that part, but otherwise, unless some pathways are consistently used, they stay inefficient. It is

important to note that human brains, are incredibly powerful, we develop language, motor, spatial and social skills that are very advanced. But they are geared for survival, not for optimal function.

Earth big rock. Puny human still make just small poof with big boom. Human think human big but human small

Disclosure: not a neuroscientist just an enthusiast. Please correct where I’m wrong.

The nervous system is running an incredible amount of processes at the same time, the vast majority of which you’re not aware of. Our awareness is a tiny sliver. What may seem like a mistake to you may be a statistically insignificant lapse considering all the computations going on.

Why the mistakes for shit you know how to do? Hard question. One reason may be that you’re not experiencing life in real time. Everything that happens takes a bit of time to get perceived, processed, and synthesized into meaningful information. If you waited for that entire process to happen before reacting, you’d be at a disadvantage. So the brain literally simulates reality, it forms expectations on past experiences and lessons, and it predicts what happens next. That’s why you can catch a ball, and why it takes time to learn how to catch a ball. Your brain predicts where the ball will be and you place your hand there in anticipation. If you had to actually analyze all of the information all the time, you wouldn’t be able to get anything done. My understanding is that the brain doesn’t have the compute power to do everything in real time, so it has to automate a bunch of things. When it does that, sometimes it makes mistakes, or sometimes reality throws a curve ball and the prediction was incorrect.

Lastly, forgetting is a feature, not a bug. Can you imagine never forgetting anything, ever? You would be inundated with memories you would have to triage. Ideally you remember shit that matters, the rest is a waste. Repetition shows that something is important and worth remembering.

We have, but lobbyists have convinced politicians that it (nuclear power) is unsafe and that we are better off using fossil fuels.

Sure,there have been a few nuclear disasters. We should not view those as acceptable, I am not saying that. But fossil fuel use has harmed humanity on a much larger scale.

Things come into focus when the rays of light meet up at the same place at the back of your eye. Since all of these rays come from different directions, you need the lens in your eye to bend them to meet properly (or glasses/contacts that do the same).

If you look through a small hole directly in front of your eye, you're eliminating all of the rays of light except those that go straight into your eye and hit the back of your eye at the same point.

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Do you not sweat when you work out?

Good luck on your journey. Wish you great health.

Don't forget wind resistance, that's a bitch.

Im sure i saw something a few years ago about a superlightweight aerodynamic frame allowing people to get up to highway speeds

The atomic bombs dropped on Japan were powerful, but they didn't even completely destroy the cities. Even people fairly close to the center of the blasts managed to survive (though some died shortly thereafter). Thus, a nuclear blast 100 times as powerful is likely to virtually destroy a large city, like New York, but it certainly wouldn't destroy the entire state of New York, let alone the world.

The largest nuclear bomb ever used, the Russian Tsar Bomba, was about 3,800 times more powerful than the one dropped on Hiroshima. Yet, the shockwave only managed to damage some buildings about 100 miles away--far from enough to destroy the entire world.

The fly wheel is as close to this concept as we can get. The problem is that for an almost perpetual system to be worth engineering and building, we would need some way to use/remove energy from the system. A fly wheel will spin for a long time with current technology used to reduce friction, but who is going to pay for it to be more and more efficient if it's not going to do any work? And doing work is removing energy from the system, thereby making the whole adventure obsolete.

A lot of humans' brains' power comes from the fact that we have an ego and THINK our brain is more powerful when in reality it is just structurally different and just as limited to the same genetic confines as all living creatures.

Our conscious attention makes errors because it is so complex. The brain is not supposed to function in a perfect manner that creates a perfect perception of reality and functions perfectly to its environment but instead the brain is to function just well enough to keep you alive and mating. Its job is to make a perception of reality just accurate enough to keep you alive but it must simplify reality because our brain is nowhere near powerful enough to be able to accurately perceive our reality yet alone how to attend to it perfectly so it does the best it can.

One of the other reasons why counterweights are put on the front of many farm tractors. When pulling a multi-plow ground breaking implement it is very easy for the resistance from it digging into the ground causing the high torque tractor to pop a wheelie and flip over backwards.

I understand the concept, I doubt it applies to dirt in the same way. There's probably some affect there, but surely not in the same cubic relation.

As an example, you can plow dirt and if you were to go over the same dirt right after and it would take much less force at a constant speed.

It's more about the mechanical bonding and friction than fluid losses in this instance. I'm calling in to question your assertion that dirt acts similarly as a fluid in this specific instance.

How much force does it take to pull a plow through dirt at zero speed? Meaning, if you put a plow in to the dirt, does it take greater than zero force to move it?

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As far as the blast radius, not really. The earthquakes, tsunamis and radioactive fallout will affect the rest of the world. But living in a 3D world means that a 1000x stronger bomb only reaches 10x as far.

And that's without counting on mountains, air resistance, and seas blocking the blast and radiation.

However there are other ways to end the world.

The meteor that killed the dinosaurs had an impact strong enough to create the Gulf of Mexico, yet its worst effect was lifting up enough dust to cover the sky for months.

Hate to break it to you, but the earth will be long gone by heat death,

the issue with this is that the most energy you could harness from it would still need to be lesser tha nthe energy you spent to keep it moving(otherwise you are slowing the system down and will have ot service it again).

you didnt generate energy , you just transfered it(and evne lost some due ot the inneficiencies involved)