Home
How old is the oldest wooden wheel ever found?

“The oldest known wooden wheel, found in the Ljubljana Marshes of Slovenia in 2002, is roughly 5,000 years old, dating to around 3150 BC.”

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1) Nickel Cadmium (Ni-Cd) batteries were the standard technology for years, but are now out of date.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.

When was the wheel invented?

The wheel was invented around 3500 BC in Mesopotamia, and it was first used as a potter's wheel for making pottery before anyone put it on a vehicle.

Were the pyramids built by slaves?

Archaeologists now believe the pyramids were built by paid Egyptian laborers rather than slaves, based on workers' tombs and villages discovered near Giza in the 1990s.

Another fact

“The oldest known wooden wheel, found in the Ljubljana Marshes of Slovenia in 2002, is roughly 5,000 years old, dating to around 3150 BC.”

More from this shelf

What are the different types of laptop batteries?

When was the wheel invented?

Were the pyramids built by slaves?