Posts by Julie Hamar
Fact of the Day: measured time
Since 1967, the second has been
Fact of the Day: measured time Since 1967, the second has been based on the absolutely predictable behavior of the cesium atom. The outer electron in...
Fact of the Day: measured time Since 1967, the second has been based on the absolutely predictable behavior of the cesium atom. The outer electron in...
Fact of the Day: vitamins
Vitamins are organic substances
Fact of the Day: vitamins Vitamins are organic substances necessary in small quantities for health and growth in higher forms of animal life. If a vi...
Fact of the Day: vitamins Vitamins are organic substances necessary in small quantities for health and growth in higher forms of animal life. If a vi...