Inverter can either refer to a NOT logic gate, or a power supply that generates AC from DC.

The logic gate inverter turns a 1 into a zero and turns a zero into a 1. On a schematic it looks like a little circle on the input or output of a logic gate or buffer.

The power supply inverter might have been more accurate to call a power oscillator instead. As most commonly used, what it does is it takes a DC source like a battery or solar panel, and repeatedly flips the polarity to make AC. There's usually also a voltage conversion happening.

People that make buildings do not work to a high level of precision. A room can be out of square by an inch and you probably wouldn't notice until you tried to put in flooring that comes in accurately cut rectangular sheets. The last pieces you add get cut to fit, not cut to whatever the dimension is supposed to be.

You can use a tape measure to measure opposite corners and compare to the other pair of corners to check squareness. You use a level to check level.

Live and neutral carry the normal operating current, earth/ground is for safety.

Neutral is tied to ground/earth at the main breaker panel.

Ground doesn't normally carry any current, but when there's a fault it provides a safe return path for the current. If you have a metal enclosure, it should be grounded, so that if a live wire touches it, it trips the breaker or blows a fuse instead of sitting there hot waiting for someone to touch it.

You can't use neutral for this, because a single point of failure on the neutral line can make the rest of it hot due to electricity conducted through the load.

Some appliances, especially those with plastic cases, don't need the ground wire, because they're double insulated(a single failure won't cause a shock hazard).

Yes, I meant muons. whoops.

The cold part means you don't need ridiculously high temperatures to get it to happen, it does not describe the outcome of the reaction.

Think of it more like autoignition temperature, rather than flame temperature. There are substances that will ignite by themselves at room temperature, but they still produce heat when burned. Fusion is a lot harder though, while there are ways to make it happen at reduced temperatures, like replacing the electrons with bosons muons, we don't quite know how to do that in a way that's practical for power generation.

yes.

If the humidity is less than 100%, water is evaporating from the wet bulb, and taking heat with it. If the humidity is 100%, dry bulb and wet bulb are the same temperature.

Low humidity means water evaporates more quickly, so heat gets sucked out more quickly.

There's no calculation a GPU does that a CPU cannot, and in the very old days the CPU just wrote to a particular location in memory when it wanted something to show up on screen. The reason you need a GPU is that displays have millions of pixels which need to get updated tens to hundreds of times per second, and GPUs are optimized to do a whole lot of the operations needed to render images all at the same time.

It's sort of like asking why we need container ships when aircraft exist that can carry cargo, and the answer is that the container ship can move a whole lot more cargo at once, even if it has some restrictions on where it can take that cargo.

Lets say you have a chunk of cold air at sea level. The sun heats up the air near the ground by hitting the ground first(regular visible light just passes through the air instead of heating it). The increase in temperature causes it to expand(the weight of the air on top of you isn't changing, so the pressure stays the same for the moment.) Now your chunk of air is less dense than the surrounding gas, so it starts to rise.

The higher up you go the lower the air pressure, so your chunk of air expands even more, pulling heat out of the evaporated water it absorbed near the surface(which condenses into clouds and rain).

High up in the atmosphere it's cooled down a lot from expanding, but it still hasn't actually gotten rid of the energy it absorbed from that sunlight, it does this by radiating infrared light off into space, cooling off even more before it starts to sink back to the ground to start the process over.

It's not the same force.

Energy = force * distance(in the direction of motion), and momentum = force * time.

There's much less distance and time during the impact than there is when firing the projectile, so force is greater.

The only line of latitude that's not bending left or right is the equator. For an extreme example, imagine walking the line of latitude one meter from one of the poles.

A line of latitude one meter from the equator is still bending, just not as much.

Lines of longitude do not bend left or right, and they all intersect at the poles, even though they're all parallel at the equator.

>You can draw parallel lines on a sphere and they stay parallel.

From the perspective of two people walking on those lines, at least one of them will need to constantly be turning left or right. If you're both walking parallel and straight, your paths will intersect 1/4 the way around the sphere.

It's psychological. Having to compete with other people for an item increases the perceived value of the item, and more people are competing for it at the lower starting price. Also, someone that really wants the item may have a higher starting bid if there's a minimum reserve, because they're effectively bidding against the seller.

Lets say there's some antique you want to get at least 100 dollars for, and this is the normal going price for the item. If you start the bidding at that price you might not get anybody to make the first bid, because It's not a particularly good deal. They're only going to pay that if they were going to buy one anyway. If you start the bidding at $50, however, you might get a couple people to start bidding that know it's a good deal at that price. Once they're in competition, they want to win the item, and may be willing to pay 110 for it.

Hypothetically you could make a machine that can self-replicate, but it would be on the level of complexity of many different fully automated factories, 3d printers would be one small part of such a machine.

Some things are just much easier to do with machining and grinding, like making linear rails to the required precision and surface finish.

Some things require completely different manufacturing processes, such as the electronics components.

There's also the issue of creating all the different materials required as input. You'd basically be automating a whole economy.

And when sea ice is forming, underneath the ice layer it forms a brinicle of highly salty and colder water.

https://www.youtube.com/watch?v=BtQhb8sWJNw

Lets say the power supply is 90% efficient at full load. At 1600W output power, the power supply will draw 1777.8W from the grid. At 120V this is 14.8A. Just barely within the rating of a normal 15A power outlet, but you wouldn't want to run anything else on that circuit.

If you're buying a computer that needs that much power, you should probably be running a dedicated 20A circuit for it.

The power draw is comparable to a hair dryer.