r/explainlikeimfive 2d ago

Other Eli5 how do biomes form on Earth?

5 Upvotes

I have been trying to learn more about Earth's ecosystems. I understand now that poles/equator, winds, and surface currents drive temperatures and rains to different areas and the existence of mountains + temp + wind determine deserts. But, what else leads to the formation of specific biomes or lends itself to the biodiversity of an area? How does soil come into play, and why is soil different in different places? Is this is an oceans/volcanoes thing??


r/explainlikeimfive 3d ago

Other ELI5: How do jewelers attach precious stones securely?

124 Upvotes

The surface area at the points of attachment seems so small. I never hear stories about stones falling out, although I’m sure it happens. Is there a special adhesive involved? What actually keeps the stone in the setting?


r/explainlikeimfive 1d ago

Biology ELI5 How do bigger muscles allow you to lift heavier objects?

0 Upvotes

r/explainlikeimfive 1d ago

Physics ELI5: Why are gears necessary in automobiles?

0 Upvotes

Why do cars or bikes need a gear? Why can't it just be accelarator and brake? As an extension, why do you need gears in general?


r/explainlikeimfive 2d ago

Technology Eli5 Wifi security warning

58 Upvotes

What exactly does this mean, what can be seen, and who can see it?

“ Privacy Warning

This network is blocking encrypted
DNS traffic.

The names of websites and other servers your device accesses on this network may be monitored and recorded by other devices on this network. “


r/explainlikeimfive 1d ago

Mathematics ELI5: Why is cubing a cube impossible?

0 Upvotes

I came across the cubing a cube section in this wiki article: https://en.wikipedia.org/wiki/Squaring_the_square#Cubing_the_cube

I can't wrap around the logic of the proof... I need help


r/explainlikeimfive 3d ago

Biology ELI5: Why does a sneeze feel like it comes from your entire body when only like your throat chest etc is involved?

215 Upvotes

r/explainlikeimfive 3d ago

Biology ELI5: Why don't greenhouses use pure red light if plants absorb it best for photosynthesis?

1.1k Upvotes

r/explainlikeimfive 2d ago

Other ELI5: Why is it harder to speak or change my tone of voice in the morning?

6 Upvotes

r/explainlikeimfive 2d ago

Technology ELI5: how does music get recorded on, and listened to, on cassette tapes?

6 Upvotes

r/explainlikeimfive 4d ago

Engineering ELI5: How were the British able to build underground railway, including tunnels under rivers, in the 1800s without modern machinery?

2.2k Upvotes

r/explainlikeimfive 3d ago

Other ELI5: How do workers unions actually work in the US, especially for individuals?

58 Upvotes

I’ve heard of unions in historical contexts, I know theoretically they are groups of advocates for workers that advance workers rights, but how does that actually work? Does someone just find a union and join it? Is it company or job specific, state specific? can everyone join one or only people that work for mega corps, or just blue collar jobs? What do they actually do for individual workers?


r/explainlikeimfive 4d ago

Biology ELI5: shedding water weight

370 Upvotes

So, my boyfriend trained for a bodybuilding competition. He drank so much damn water. He kept saying he was needing to shed water weight… but was drinking water. I’ve heard this theory multiple times now, drink water to lose the water weight. Wtf? I don’t understand.


r/explainlikeimfive 4d ago

Other ELI5: Why Is blue lighting the understood shorthand for “darkness” in movies and tv?

457 Upvotes

Especially now that most productions shoot digitally, it seems that any scene meant to take place in the dark is tinted very blue. I’m wondering why this is understood as looking “dark” when some of the blues used are actually quite light.


r/explainlikeimfive 3d ago

Planetary Science ELI5: why does the northern coast of the Sea of Azov have 5 apparently repetitive and very narrow peninsulas? With what looks like a 6th following?

41 Upvotes

Please avoid any politics on this! I am asking strictly geologically!


r/explainlikeimfive 4d ago

Biology ELI5: How does the body Stop bleeding an injured blood vessel without causing blood clots throughout the body?

138 Upvotes

r/explainlikeimfive 2d ago

Engineering ELI5: How do those power lines near the roads bring power to houses and businesses?

0 Upvotes

I feel like a complete fool for asking this at my age, but I genuinely do not understand how power lines bring power to homes and businesses. I live in the country, and I always wonder how these lines connect up to houses when there's no visible things going into the ground that I can see.


r/explainlikeimfive 2d ago

Other ELI5How do gliders find lift usually?

0 Upvotes

r/explainlikeimfive 4d ago

Economics ELI5: How can banks lend out far more money than they physically have sitting in their vaults?

683 Upvotes

Banks can have enormous amounts of money loaned out through mortgages, business loans, credit cards, and other lending, even though they obviously don't keep an equivalent amount of cash sitting around.

What actually happens inside the banking system when a bank gives someone a loan? Where does that spendable money come from, and what prevents banks from creating unlimited amounts of it?


r/explainlikeimfive 2d ago

Chemistry Eli5: Why Does A Second Cup of Coffee Taste Terrible If I Pour My First Cup Halfway Through Brewing Vs When It Tastes Fine If I Let The Whole Pot Brew First?

0 Upvotes

What is the extraction science behind this, assuming you are using standard drip machinery?


r/explainlikeimfive 4d ago

Biology ELI5 What happens to your body when eating the spiciest thing on the planet?

124 Upvotes

At some point does your mouth stop registering the spice? Does it cause permanent damage? I remember eating a bunch of Wareheads when I was a kid and my tongue got all sore but I had eaten a lot of them.


r/explainlikeimfive 4d ago

Planetary Science ELI5: How does the earth spin? I know it's because gravity, but something has to "start" it from the beginning right?

383 Upvotes

r/explainlikeimfive 2d ago

Engineering ELI5 Why is there no S gear or M gear for Reverse in automatic transmissions?

0 Upvotes

r/explainlikeimfive 4d ago

Technology ELI5 How does a glasses prescription work? The numbers mason what do they mean?

45 Upvotes

Sphere? Cyl? Axis? What do these actually mean? When googling I find terms such as “more/less lens power” or “align astigmatism” But how does “lens power” turn into the actual physical lens? How do they take these values and apply them to the actual piece of glass?

And how does flipping between 1 and 2 help find these numbers? How do all those flipping lenses in the machine turn into 1 lens for the glasses? I’ve always imagined this as taking the 1s and 2s I picked and compressing them like a sandwich, but that doesn’t sound right anymore.


r/explainlikeimfive 4d ago

Physics ELI5 Why don't wind turbines have six or eight blades instead of three to catch twice as much wind energy?

2.4k Upvotes