Some spectra of Compact Fluorescent Tubes
The following spectra were obtained simply with the above setup. Note these are stretched out somewhat; We will
try to align them with the above colour spectrum later.
(A) Visible light from mercury - still to come.
(B) Current technology CFLs
These all have similar characteristics:
- The two expected mercury lines blue (436 nm) and green (546 nm)
- Additional green and blue lines from terbium (Tb3+) - green (542 nm), just
below the mercury green line, and blue (488 nm).
- A significant red line surrounded by lesser lines, largely from europium
Osram f888 Cool white - somewhat lacking at the red end of the spectrum.
Osram "Warm white" - Note substantial boost at red end.
Philips Genie "Warm white"
Pro-view work lantern
(C) "Old-style" halophosphate phospors
These are unusual as they show a continuous spectrum over the green - red section. We see the two expected
mercury lines blue (436 nm) and green (546 nm) plus some sodium (?) at 590 nm).
"Simple choice" - Game stores house brand(?)
Osram 40 W fluorescent tube
(D) Some continuous spectra for comparison
100 W frosted incandescent lamp