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.
anemic (-ne'mik), adjectiveanemically (mi-k(a-)le) Symptomatic anemia exists when hemoglobin content is less than that required to meet the oxygen-carrying demands of the body. If anemia develops slowly, however, there may be no functional impairment even though the hemoglobin is less than 7 g/100/dL of blood. Anemia is not a disease but rather a symptom of other illnesses.