See Also: Nipkow disk(medicine)
Nipkow disc(dictionary)
Z disk(medicine)
I disk(medicine)
H disk(medicine)
Disk(medicine)
Disk(health)
disk(dictionary)
herniated disk(medicine)
porous disk(medicine)

bean(2) (iou) and Nipkow disk (medicine)


bean(2) (iou)



bean verb trans. [bi:n] slang (chiefly N. Amer.). E20.
[from the noun.]
Hit on the head.

Nipkow disk (medicine)


Nipkow disk
<microscopy> An opaque circular disk perforated with small holes arranged at equal angular separations and in an Archimedes spiral. The holes trace a raster scanning pattern when the disk is spun around its centre. The Nipkow disk was used in early experiments on Television and more recently in Petrans confocal microscope.