Petrol in North America has a lower octane rating than the rest of the world because the US and Canada have a stricter way of measuring it. "Regular" gasoline sold in the US as 87 octane would actually be considered 92 in the rest of the world and "midgrade" fuel sold as 89 octane would be 95.

Zero is just a portal between positive and negative numbers.

Life tip: If you can’t figure out how something goes back in it’s box, look and see if there’s a YouTube unboxing video.

Assembling electronics in a factory (Hungary, 1966)

The sentence "the quick brown fox jumps over the lazy dog" uses every letter in the English alphabet.

What happens in your head when you add 37+48?

1 gram of activated charcoal has a surface area of over 3,000 m²

What car has most comfortable front seats?

There is a rare type of very hard wood called ‘Lignum Vitae’. It’s so hard that it was used to make propeller shaft bearings for nuclear submarines.

On Feb 25, 1896, Nikola Tesla patented Alternating Motor.

The Clearest Image of Venus's Surface, By a Lander that Melted After 2 Hours. On March 1, 1982, the Soviet spacecraft Venera 13 landed on the fiery surface of Venus and sent back the clearest images we’ve ever received from that hellish world.

Life tip: Need to divide something fairly between 2 kids? Let one kid make the split and let the other kid choose the partition.

If engineers are wrong, things explode. That’s why we double-check.

Space fact: If you were driving at 75 miles per hour (121 kmh), it would take 258 days to drive around one of Saturn’s rings.

Life tip: Buy yourself a fire extinguisher. It's better to have something you don't need than to need something you don't have.

Imagine using AI supercomputers to understand what dogs and cats are saying — instead of putting everyone in a bikini.

A negative thinker has many problems to one solution. A positive thinker has many solutions to one problem.

NASA's Voyager 1 space probe was launched 16 days after its twin, Voyager 2.

Scientists renamed 27 human genes in 2020 because Microsoft Excel kept auto-converting their names into dates, causing widespread errors in published genetic research.

Adapter for threaded rivets

When you look at the sun, you see how it appeared 8.5 minutes ago.

Marriage logic map

Life tip: Remove the batteries from electronics, toys, etc. before storing them away. The batteries may corrode the terminals rendering the item useless in the future.

When jumpstarting a car, you should connect the negative clamp to an unpainted part of the engine block rather than the negative battery post on the dead car. Otherwise if a spark occured it could ignite the hydrogen gas emitted by the lead acid battery.

Thread rivet nut

Supercooled water 🧊

How old were you when you found out that nuclear reactors are just fancy steam engines?

i don't need it but i want it

Button cell battery names are actually codes include the chemistry, shape, diameter and thickness. CR2032 is C lithium, R round, 20mm diamter, 3.2mm thick

40 years before Google Maps, you called people who looked at maps

👏🏻

Nut zipper drill attachment

Life tip: if you’re trying to focus on studying listen to videogame music. It’s designed to be background noise while you focus your attention on other tasks.

And what is your superpower? 😃

Useful tip

🤯

That finish is unreal

Daniel Fahrenheit (who invented the mercury thermometer) set 0°F to the coldest stable temperature he could maintain in his lab by dissolving salt in water.

∞ - ∞ = 0 Well yes, but actually no

Life tip: It's time to turn off your ceiling fans, clean the blades, and reverse the switch.

How it works

Albert Einstein and Marie Sktodowska Curie reminiscing by a lake in 1929

How to install concealed hinges

Life tip: If a spray bottle doesn't work and still has liquid in it, stick your finger over the nozzle and pump it a few times and it'll create a vacuum and start working again.

World of Engineering Quiz: Which of these trucks are driving?

Why is this so satisfying to watch?

Life tip: The tires should be inflated to the value shown on the sticker on one of the doors or even on the fuel cap, the value written on the wheels is the maximum value, not the recommended value.

Drops on penny experiment: water vs alcohol. The water molecules have much more cohesion than alcohol molecules, because they grab onto one another through hydrogen bonds.

Cordless wall chaser