The quantity h, now known as the Planck constant, is a universal constant with the approximate value of 6.626 X 10^-34 Js. Max Planck assumed that the radiation energy is emitted in discrete packets called quanta rather than in a continuous way. The energy E of the quantum is related to the frequency Î½ by E = hÎ½. The quantity h, now known as the Planck constant, is a universal constant with the approximate value of 6.626 X 10^-34 Js. Max Planck assumed that the radiation energy is emitted in discrete packets called quanta rather than in a continuous way.
1 Some patients with anemia have no symptoms. 2  Those that do have symptoms may. 3  feel tired, 4  become easily fatigued, 5  appear pale, 6  have a feeling of a heart racing, 7  feel short of breath, and/or. 8  have worsening heart problems. 9  Anemia can be detected by a simple blood test called a complete blood cell count (CBC).
While some people might not have any symptoms or only a few minor complaints, anemia can make you feel tired, dizzy and easily fatigued. People with anemia may also suffer from shortness of breath, an irregular heartbeat, headaches, leg cramps and insomnia, and often complain they have difficulty concentrating. There are many types of anemia, more than 400 in total, and each specific type has its own cause and its own symptoms that go beyond those most commonly associated with the general condition.