hydrogen bomb. hydrogen bomb or H-bomb, weapon deriving a large portion of its energy from the nuclear fusion of hydrogen isotopes. In an atomic bomb, uranium or plutonium is split into lighter elements that together weigh less than the original atoms, the remainder of the mass appearing as energy.nlike this fission bomb, the hydrogen bomb functions by the fusion, or joining together, of lighter elements into heavier elements. The end product again weighs less than its components, the difference once more appearing as energy.
2) Babinski Sign. When the foot and toes abnormally extend upward toward the head during a plantar reflex assessment, this is called Babinski sign or Babinski reflex. It can be benign. Sleeping adults and children under two tend to have Babinski sign with no underlying pathology.) Babinski Sign. When the foot and toes abnormally extend upward toward the head during a plantar reflex assessment, this is called Babinski sign or Babinski reflex. It can be benign. Sleeping adults and children under two tend to have Babinski sign with no underlying pathology.
Neuromyelitis optica (NMO), also known as Devic's disease or Devic's syndrome, is a heterogeneous condition consisting of the simultaneous inflammation and demyelination of the optic nerve (optic neuritis) and the spinal cord (myelitis).It can be monophasic or recurrent.pinal cord lesions lead to varying degrees of weakness or paralysis in the legs or arms, loss of sensation (including blindness), and/or bladder and bowel dysfunction. Devic's disease is now studied along a collection of similar diseases called Neuromyelitis optica spectrum diseases.