paddlingjackdaw:
continuous spectrum
paddlingjackdaw:
Photo set-up
paddlingjackdaw:
uv lamp
paddlingjackdaw:
uv lamp spectrum
paddlingjackdaw:
continuous spectrum (filament lamp)
paddlingjackdaw:
line spectrum (CFL)
paddlingjackdaw:
line spectrum (discharge lamp)
paddlingjackdaw:
discharge lamp
paddlingjackdaw:
continuous spectrum