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Mattscheibe f =, -n
gen.	ground glass screen; matt screen; frosted glass
astr.	focussing screen
construct.	ground glass diffusing screen; diffusing panel
earth.sc., el.	diffuser; light diffuser
el.	depolished glass; ground glass
inf.	idiot box TV; mental block
opt.	ground glass screen (disk, plate); ground glass viewing screen; opal glass screen
phys.	ground-glass screen; mat glass plate
tech.	diffusing screen; diffusion plate; focusing screen; viewing screen

Mattscheibe: 5 phrases in 2 subjects

General	1
Optics branch of physics	4