Home
What was James Watt's biggest improvement to the steam engine?

“James Watt patented a separate condenser in 1769, which made steam engines far more fuel-efficient by not having to reheat the main cylinder every stroke.”

Reference: Britannica

What are the different types of laptop batteries?

There are currently three types of batteries commonly used to run people's laptops:
1) Nickel Cadmium (Ni-Cd) batteries were the standard technology for years, but are now out of date.

2) Nickel Metal Hydride (Ni-MH) batteries are a cadmium-free replacement for Nickel Cadmium.
3) Lithium Ion (Li-ion) is the battery you want for your laptop and is the current standard for portable power.

Did the ancient Greeks have a steam engine?

Hero of Alexandria described the aeolipile, a spinning steam-powered device, in the first century AD, but it was treated as a curiosity rather than a machine for work.

How many people use the internet?

About 5.5 billion people, roughly two-thirds of the world's population, use the internet, according to the International Telecommunication Union.

Another fact

“James Watt patented a separate condenser in 1769, which made steam engines far more fuel-efficient by not having to reheat the main cylinder every stroke.”

More from this shelf

What are the different types of laptop batteries?

Did the ancient Greeks have a steam engine?

How many people use the internet?