Please read this entire message

Your submission has been removed for the following reason(s):

• Loaded questions, or ones based on a false premise, are not allowed on ELI5 (Rule 6).

If you would like this removal reviewed, please read the detailed rules first. If you believe this was removed erroneously, please use this form first. If you believe this was removed erroneously, please use this form and we will review your submission.

The sun is not burning the way a fire on earth burns.

It is a huge ball of plasma undergoing nuclear fusion, a process which generates incredible heat, so it burns from within due to the process, not because it is using oxygen as a fuel.

I walk 2.5 miles per hour and I'm not a Roman imperial soldier.

The dictionary defines information as: Knowledge or facts learned, especially about a certain subject or event

And data is defines as: Facts that can be analyzed or used in an effort to gain knowledge or make decisions

Data and information can have specific definitions and differences in various technical contexts. But colloquially, they are often used interchangeably; or sometimes we define data as the raw knowledge, and information as the additional knowledge inferred from the data.

Data and information are philosophical concepts, they do not have a tangible presence or consume physical space. However you can't store or convey information without some physical medium on which to do so. Data in a brain requires neurons. Data in a book requires ink. Data in computer science requires electricity, or magnetism, or bumps on a polycarbonate surface, etc.

To "use data" doesn't make literal sense in most cases, data as a concept cannot be physically "used", and even as a physical representation often the mechanisms used allow the data to be "consumed" in a way that does not deprive anyone else of it - essentially a copy of the data is communicated.

But when you say "using mobile data" it's clearer what you mean colloquially. In this sense, you are "consuming" a portion of your allotted mobile data plan. Or in other words, it costs money to run a mobile network; you've paid for the ability to send and receive a certain amount of digital data using the provider's network, so performing an activity like browsing web pages or watching YouTube videos counts towards that data usage. And if you go over that limit your access may be blocked, slowed, or incur additional charges. The "usage" and "consumption" occurring here is in the sense of your contract only allows a finite amount of data transmission, it's not like you are physically taking electrons away from YouTube and they might run out. "Using data" is just the shorthand term we use to describe this.

IIRC, most of the "Imperial" units (I'm from a metric country lol) were based on ancient Roman units. Back then, a mile was the distance traveled by a soldier in one hour. Man those guys were fit.

The various kingdoms of the world all had different units for measurements, and when you're trying to communicate between different cultures, the first thing you need is standard meanings of terms. So the merchants and navies of the world standardized the nautical mile, for example.

And yes, nautical miles per hour (knots) is still a commonly used measurement of speed, even if things like "fathoms" and "leagues" have fallen into disuse.

This is an easy google search.

But briefly, a nautical mile is based on the size of the earth. It honestly makes way more sense than a statue mile, which is just some random thing.

A knot log was a method of tying knots evenly spaced into a rope and then tossing the rope over the side with a piece of wood at the end. Wait a minute, stop the rope, see how many knots had gone out when you pulled the rope back up. So speed became abbreviated as knots, which is now nautical miles (vs statue miles, which are shorter) per hour.

A quick trip to Google reminded me that a fathom was just the distance between a sailor's outstretched arms, useful when hauling up an anchor.

We gave up on fathom for the most part, but the others are still useful.

this is absolute 100% bullshit...

Why would that be strange?

If you want to know more about Harley's, this is a good video.

https://www.youtube.com/watch?v=XeuXShFIgyc&t=118s

In Harley's case, 2 pistons are mounted at the same point on the crank shaft, so the firing has to be 45 degrees offset, since the cylinders are 45 degrees offset.

Harley also fires both spark plugs at the same time. These two factors lead to a different sound when comparing it to other bikes.

This is also why intense workouts and adrenaline situations cause stomach distress.

Shunting blood away from less immediate things like the stomach and keeping it available for muscles is a survival mechanism. It doesn’t matter if your meal is properly digested if you’re dead in the next few minutes to whatever the threat is.

The sun doesn't burn, fire is a molecular process involving oxygen that releases energy. The sun's intense gravity forces atoms to fuse (fusion), a process that releases far more energy. That energy is then absorbed by other atoms that release the energy in photons that is picked up by your eyes.

Not directly, it takes some ludicrous number of years for the energy created at the core of the sun to actually reach the surface.

[deleted]

The sun isn't really burning. It's so dense that it squeezes the hydrogen it's made of together into helium. This process releases some of the energy the hydrogen was carrying before it was fused, released as heat and light.

why is this happening only after a certain age?

The Sun isn't "burning" in a conventional sense, but instead is going through nuclear fusion. It's a completely different process.

the normal showerstuff, no shampoo or soap

course, when i have

Simple, the Sun isn't on fire, it's a nuclear reaction.

The Sun is made up mostly of Hydrogen. Under the intense pressure the sun generates by it's own gravity, it's core is crushed into an incredibly dense and hot state.

In the core Hydrogen atoms are so close together, and move so quickly that they are able to overcome their repulsive forces (like trying to push two positive ends of a magnet together) and smash together forming a heavier element, Helium. This releases a tremendous amount of energy in the form of heat and photons (light) and is what powers the Sun.

This process is so energetic, and requires so little fuel (compared to a fire) that the Sun will keep fusing Hydrogen for Billions of years.

In larger stars this process keeps going and Helium can fuse to produce heavier elements like Oxygen, Nitrogen, Carbon, and Iron. This is where all of those elements are created. When those stars die in explosions called supernova, their enriched guts spew across the galaxy to form new planets and solar systems.

So it turns out, you are made of Star Dust

[removed]

The sun isn't burning in the sense of combustion. That's when flammable things rapidly oxidize and give off light and heat. The end result of nuclear fusion looks and seems very similar but mechanically it's completely different

1. The sun is not in "outer space" because it is big enough to have enough gravity to have an atmosphere, but more importantly...
2. The sun is not burning. It is undergoing nuclear fusion because it is so big and generates so much gravity, that the gravity actually forces elements together in the core. This resembles burning only in that it produces a hell of a lot of heat and light.

In general if two equivalent size engines have differences in cylinder numbers the sound will be from smaller cylinders, moving faster.

A 650 twin will have 2x 325 CC pistons firing in a specific order. Some with a 90 degree offset, others with 270. This just means “if one cylinder fires, where is the other one”. This can also have an effect on the sound since the combustion of gas in the cylinders is what causes the noise.

So there’s two larger cylinders firing in a different order.

In a higher cylinder configuration like a V4 or inline 4, the firing order is different, but also there are much smaller cylinders.
Generally a 600cc will have about 150cc cylinders, but firing much faster to get the same power.

It’s the difference of “big pops slower, or smaller pops much faster” and a little bit of what order the pops happen in.

[deleted]

Engines have pistons that compress then decompress in an engine and whenever the piston compress it is actually compressing a type of fuel (idk what it's called) and the spark plug of that piston sparks and ignites the fuel. This launches the piston to the other side where another spark hits and it returns. The sound of a motorcycle running is actually all those sparks going off and it's just that some motorcycles have more sparks/more powerful spark plugs.

They are coded genetically, simple as that.

Eyebrow hair has a different string of proteins in its DNA coding for its design, meaning when they form they are constructed differently.

Like the blueprints for them contain different instructions.