Your friend reasons that if ultraviolet light can
activate the process of fluorescence, infrared
light should also. Your friend looks to you for
approval or disapproval of this idea.
What is your position?
1. None of these
2. Your friend is correct; if the intensity of
the infrared light is strong enough, fluores-
cence will be easily activated.
3. It depends; we need to know the intensity
and the duration of the irradiation that will
be used to activate the fluorescence.
4. Your friend could be wrong; the energy
of the ultraviolet photon is higher than the
energy of infrared photon, so the fluorescence
activated by the ultraviolet light may not nec-
essarily be activated by the infrared light
activate the process of fluorescence, infrared
light should also. Your friend looks to you for
approval or disapproval of this idea.
What is your position?
1. None of these
2. Your friend is correct; if the intensity of
the infrared light is strong enough, fluores-
cence will be easily activated.
3. It depends; we need to know the intensity
and the duration of the irradiation that will
be used to activate the fluorescence.
4. Your friend could be wrong; the energy
of the ultraviolet photon is higher than the
energy of infrared photon, so the fluorescence
activated by the ultraviolet light may not nec-
essarily be activated by the infrared light
-
4
-
3.