More than 2,300,000 limestone and granite blocks were pushed, pulled, and dragged into place on the Great Pyramid. The average weight of a block is about 2.3 metric tons (2.5 tons). How much is that?

The "700 MHz band" is actually two bands: Upper 700 MHz and Lower 700 MHz. Each has its own set of blocks. That means you need to be careful when talking about the 700 MHz "C Block", for example ...

From lens focal lengths and fill-flash to portraits, macro or stunning landscapes there are techniques for everyone. Learn how to use metering, considering composition and shoot everything from ...