See Also: Gratiolet's radiation(medicine)
Poulsen arc(dictionary)
Gratiolet(medicine)
Gratiolet's fibres(medicine)
X-radiation(medicine)
radiation(encyclopedia)
radiation(dictionary)
Radiation(medicine)
radiation(dictionary)
L-radiation(medicine)

Poulsen arc (iou) and Gratiolet's radiation (medicine)


Poulsen arc (iou)



Poulsen arc noun phr. obsolete exc. Hist. E20.
[from Valdemar Poulsen (1869-1942), Danish electrical engineer.]
An arc discharge between a carbon electrode and a water-cooled copper electrode in a hydrogen or hydrocarbon vapour atmosphere and a strong magnetic field, formerly used in the generation of short-wave Radio waves.

Gratiolet's radiation (medicine)


Gratiolet's radiation -->
optic radiation


The massive, fanlike fibre system passing from the lateral geniculate body of the thalamus to the visual cortex (striate or calcarine cortex, area 17 of Brodmann); the fibres follow the retrolenticular and sublenticular limbs of the internal capsule into the corona radiata but they curve back along the lateral wall of the temporal and occipital horns of the lateral ventricle to the striate cortex on the medial surface and pole of the occipital lobe.

Synonym: radiatio optica, geniculocalcarine radiation, geniculocalcarine tract, Gratiolet's fibres, Gratiolet's radiation, occipitothalamic radiation, Wernicke's radiation.