md

Tech Writer✍️ || Educational Tech Content💻

[Sufyan Maan, M.Eng @sufyanmaan]

Look at this image for a second. Really look at it!

That Mercedes on the left?
The hood is looking like a furnace

The Tesla on the right? Barely warm, just a heat sign around the wheels

BTW same road, same outside temp, completely different machines

This is one of the pretty clear visual demo of energy efficiency

A gasoline engine converts only about 20–30% of fuel energy into actual motion

The rest is lost mostly as heat, through the exhaust, radiator, & engine friction

Electric motors ttotally flip that ratio

They convert 85–90% of their stored energy into movement.

The only “hot spots” you see on that Tesla are the wheels, and most of that is just friction from the tires + brake heat

Regenerative braking actually captures a lot of that energy back into the battery instead of wasting

We’ve spent over a century perfecting the art of tiny controlled explosions inside metal cylinders, surrounded by cooling systems.

1000s of moving parts
Oil changes
Belts
Spark plugs
Converters

Just inefficient process

Meanwhile, an EV has roughly 20 moving parts.

No combustion
No massive cooling fans
No exhaust

Just magnets, copper, & better software

How much of what we consider normal is actually just waste?

Energy we don’t measure
Inefficiency we’ve pretty much accepted

What other “inefficiencies” do you think?

[md @mdmwrld]

Any advice on what?

[kat @katyXBT]

Any advice on how to avoid losses in crypto?

[md @mdmwrld]

@arkham Ethereum is just chilling😑

[md @mdmwrld]

@Polymarket All to distract from the Epstein Files.

[md @mdmwrld]

Follow me for simple breakdowns of complex tech✌️

[md @mdmwrld]

🕛 II 🧵
With FOUR satellites?

🎯 You get your exact location (latitude, longitude, altitude)

This process is called Trilateration

Now here’s where it gets wild…

GPS would be completely useless without Theory of Relativity.

[md @mdmwrld]

Your phone knows your exact location... anywhere on Earth.

How?

Not because of magic.
Not because of towers.

But because of space, atomic clocks, and a theory by Albert Einstein.

Here’s how GPS actually works 🧵

[md @mdmwrld]

So next time you open maps…

Remember:
You’re not just using your phone.

You’re using:
• Satellites in space
• Atomic clocks
• The speed of light
• And Einstein’s theory

All to find the nearest shawarma spot.

[Geoff Wacker @GeoffWacker]

That's fuckin' right!

[md @mdmwrld]

@McNasty Why do you think the Iran war is so miscalculated? Maybe it wasn't a miscalculation in the first place. It's a big enough distraction.

[md @mdmwrld]

With TWO satellites?

You narrow it down to a circle.
Still not precise.

With THREE satellites?

Now you get two possible points.

Closer, but not perfect.

🧵 II 🕛

[md @mdmwrld]

Your phone knows your exact location... anywhere on Earth.

How?

Not because of magic.
Not because of towers.

But because of space, atomic clocks, and a theory by Albert Einstein.

Here’s how GPS actually works 🧵

[md @mdmwrld]

Now imagine this:

You’re somewhere on Earth.
If you know your distance from ONE satellite…

You could be anywhere on a huge sphere around it, so it's not very helpful.

[md @mdmwrld]

@gregisenberg I think that's because most people have been introduced to AI from a biased viewpoint through sci-fi movies long before AI became mainstream.

[md @mdmwrld]

@BitmundFreud Hype Dies Fast.

[md @mdmwrld]

@WatcherGuru That's a possibility, but what does it change?

[md @mdmwrld]

A scammer calling out a scam means the new scam is on another level.

[Cointelegraph @Cointelegraph]

🚨 TODAY: Justin Sun calls out World Liberty Financial's latest governance proposal as a "sham," alleging voter coercion and selective token freezing.