Category: General

What is the length of arc AB?

The ratio of the angle ACB to 360 degrees will be 100/360 = 5/18. Thus, the length of the arc AB will be 5/18 of the circumference of the circle, which eq...

What did pharaohs sleep on?

Resembling a modern-day bedframe, the pharaoh's beds were made from wood, stone or ceramics that, like every other bed in Africa at the time, had hea...

Does PRK last forever?

As for how long PRK surgery results last, just like LASIK, the results are permanent, but laser eye surgery cannot prevent your eye from aging, says the A...