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lol, you don't need the scientific method to count 13 lunar months, 28 days, 364 days in a year. and then after a few years you would realize that your days are off a little. After a few resets, it wouldn't be hard to realize that 1 day every 4 years keeps it on track.

This would have been known and kept track of so long ago, 50K? maybe 100K years ago. They didn't have writing tools but they had pretty sophisticated markings on sticks and stuff.

We don’t. We need to take vitamins when we have a poor diet, not when we are sick… Unless that sickness is the lack of a specific vitamin itself, which was itself caused by a bad diet, so it’s not really an exception

>However, it wasn't until the development of sophisticated astronomical observations that the length of a year could be determined accurately, leading to the Gregorian calendar with a year length of 365 days and a leap year of 366 days every four years

people in the Stone age would have had a lunar calendar which was 13 months of 28 days, totaling 364, and they would have realized it was offset every few years and adjusted it accordingly.

This would have been known a LONG, LONG time ago, long before writing, maybe as much as 100,000 years ago

I mean Stonehenge was made around 5000 years ago near the end of the stone age, and that was a masterpiece showing knowledge of leap days and such, and this was before any of the more advanced techniques of the bronze age like water clocks, hour glasses, and more precise sundials that showed up around 3500BC.

Which is also why we have 350,000 ton steel sky scrapers instead of 1 million ton stacks of wood

Out of . . . ?

Just by watching the moon you can come up with 13 months of 28 day cycles, and that's 364 days. that would be a good enough calendar for much of human history.

Ahh man lol. I was so excited for a min there. I was getting you tell my wife they’re basically vitamins lol

Long before calendars, farmers knew the lunar schedule of 13 months of 28 days which is 364 days, and they knew it was off so every few years you had to adjust it. This would have been relatively common knowledge around 10-20K years ago.

Babylonians knew 360 was off when they made their calendar, but they didn't care. 360 was just too perfect for dividing stuff. So they just had a 4-5 day holiday after the harvest that didn't go on a calendar. People got a vacation after all that work, and the rest of the year you could divide days in your head. everyone wins.

Also, the amount of o2 that water can absorb is significantly affected by water temperature. Colder water holds more o2

Thank you so much ! 🙏 I kept hearing it over and over and never knew why people were mentioning it!

It makes sense now !

The algea bloom also limits the depth light can penetrate, reducing the amount of o2 produced by submerged plants and phytoplankton

There are some lapses in thinking multiplying is all just 1x1.

Let’s think of it differently by thinking of apples.

When we add, we are counting how many apples in total we have. Let’s say we count all the apples in a tree, and we have 25. Then on another tree, there are another 25. We add those (25+25) and we get a total of 50 apples.

When we multiply, we’re considering units or groups of things. If I have a bag of apples, and each bag hold 5 apples, then I have 5 apples total. If I have multiple bags (let’s say 8 bags) then I’m going to multiply.

Since each bag holds 5 apples, and I have 8 total bags, I’ll multiply 5 apples (per bag) by 8 bags which leaves me with 40 apples.

In your question, we would have 11 groups of 11, which ends with 121; you would use 11+11 if you were adding 2 groups of 11.

Engines have to take in air in order to burn fuel. In a naturally aspirated engine, that works a lot like your own breathing. Instead of an expanding chest, it's a piston moving down that creates suction.

In a forced induction engine there's some kind of external air pump (a turbocharger or supercharger) that forces pressurized air into the engine.

Both types have their advantages and disadvantages depending on the application. Naturally aspirated engines have better throttle response, but they make less power, for example. They're simpler to make but more difficult to modify, and often not quite as fuel-efficient as a forced induction engine optimized for economy.

11x11 is asking how many total if we have 11 groups each with 11 per group? One group of 11 is 11, 2 groups is 22, 3 groups are 33, 4 groups are 44..... And 11 groups are 121

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11 x 11 means 11 groups of 11, just like 10 x 10 means ten groups of ten. Ten groups of ten gives you 100 total objects, 11 groups of 11 gives you 121 of whatever you’re counting. You can try it with squares of grid paper if you don’t believe me.

So. It makes perfect sense really. Think about an ice cold water bottle on a hot day. Picture it. Is the exterior of the bottle wet, or dry? Wet. Because when hot, damp air touches a cold, dry object, it condenses into water droplets on the object. Now imagine the bottle is your egg, and the hot summer day is the inside of the egg cooker. The steam from the boiling water in the bottom of the cooker condenses and forms water droplets on the egg. Once the droplets get big enough, gravity takes hold, pulling them down. Down, back into the bottom of the cooker, to be boiled and start the cycle again

When you have a lot of eggs filling the chamber, you have a lot of surface area for water to condense onto, which means a lot of water droplets making their way back down to the bottom. Conversely, when you have one egg, there is less cold area for water to condense onto, so most of the steam goes out of the top of the cooker, which means less droplets make it back into the water. Therefore, you need more water, since a larger percent of that water is escaping, to produce the same firmness of egg and the same cooking time as multiple eggs.

The way the timer works is a bit more technical and I haven't taken one apart yet to find out which of the two mechanisms I'm thinking of is used, so can't tell you for sure HOW it works, but I can tell you WHY it works. Water boils when heat is transferred to it, we know that much. There's a heating element under the metal bowl at the bottom of the cooker, which transfers heat through the bowl, into the water. But we can also think about it as the water cooling down the bowl, and thus the heating element, because that is also happening at the same time. As long as the water is cooler than the heating element, which it is all the way up until it turns to steam and is no longer touching the bowl, it is stealing heat from the element and keeping it at a steady temperature. Once all the water boils off, the heating element can no longer stay cool, and rapidly heats up. That's when the cooker decides to turn off and voila! Perfectly cooked eggs.

The great thing about how they work is that the whole process is very easily reproducible, allowing for perfect eggs every time as long as you put the proper amount of water into it.

Hope that helps!

• JKR is anti-trans and vocal about it.

• Hogwarts Legacy just came out.

• people talk about the first point when the 2nd is a topic

One (1) is not the same as Eleven (11). 11 is not 1 and 1, it's Ten more than One.

If you have 11 people, and want to give them each 11 apples, you'll need 121 apples.

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put a stick in the ground, at noon on each day, measure the shadow, the higher the sun is in the sky, the closer to the stick the shadow will be. On the day the shadow is the farthest from the stick, that means the sun is the lowest in the sky, and that's the shortest day.

When it took months to cross an ocean no one really cared. Everyone just used their own local time. Most people didn't need to subdivide time that accurately. Sun comes up you work. Sun goes down work is done. Sun is at the highest point in the sky it's noon. The fact that the time wasn't the exact same as a town a several miles and hours away by foot (or horse) didn't matter.

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To help clear up some confusion, what gets used up is "Dissolved Oxygen", which is oxygen that's in the water, that fish and plants need to survive. Fish and plants aren't separating the hydrogen and the oxygen in the water molecules, they're using the dissolved oxygen suspended in the water.

Some ways to aerate water are fountains, bubblers, or in the case of flowing water you just put a bunch of rocks in the water to create rapids, also called riffles.