RF – מילון אנגלי-אנגלי
RF (Radio Frequency)
frequency of the radio waves on which a transmission is broadcast
Rf (rutherfordium)
n.
radioactive transuranic element; also called unniqualdium (Chemistry)
RF (disambiguation)
Radio frequency
Radio frequency (
RF) is any of the electromagnetic wave frequencies that lie in the range extending from around to , which include those
frequencies used for communications or radar signals. RF usually refers to electrical rather than mechanical oscillations. However, mechanical RF systems do exist (see
mechanical filter and
RF MEMS).
RF
Noun
1. a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland
(synonym) releasing factor, releasing hormone
(hypernym) factor
(hyponym) growth hormone-releasing factor, GHRF
2. a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone
(synonym) reticular formation
(hypernym) neural network, neural net
(part-holonym) brainstem, brain-stem, brain stem
(part-meronym) reticular activating system, RAS
Rf
Noun
1. a radioactive transuranic element which has been synthesized
(synonym) rutherfordium, kurchatovium, Ku, unnilquadium, Unq, element 104, atomic number 104
(hypernym) chemical element, element
RF (république française)
Republic of France
rutherfordium
n.
(also: Rf) rutherfordium, transition metal element, element that is ductile
