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.
Headaches Frequent headaches can be another sign that you are anemic. In the context of a blood disorder, however, headaches usually indicate that there is a lack of oxygen reaching the brain. When this happens, the arteries in the head start to swell, causing pain.
Signs and symptoms of sickle cell anemia, which vary from person to person and change over time, include: 1  Anemia. Sickle cells break apart easily and die, leaving you without enough red blood cells. 2  Episodes of pain. Periodic episodes of pain, called crises, are a major symptom of sickle cell anemia. 3  Painful swelling of hands and feet.