What does a complete blood count measure? A CBC measures the amount of 3 types of cells in your blood: White blood cell count. A white blood cell count, also called a leukocyte count, measures the total number of white blood cells in a sample of blood.
In the umbra, the light from the Sun is completely blocked by the Earth. Our lunar observer would see a total solar eclipse; we see the Moon darkened, but glowing a dull red from light scattered by the Earth's atmosphere.
August 21, 2017 â Total Solar Eclipse. This eclipse will be the first total solar eclipse visible from mainland United States since 1979. Totality will be visible in many cities from East Coast to West Coast. Eclipse path & animation.