You would not say the red light is up-converted as it is passed
through the filter?
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
On Aug 7, 2009, at 6:46 PM, Roarty, Francis X wrote:
Horace,
I feel like I am falling into a trap here but a blue filter
restricts all wavelengths but blue.
Best Regards
Fran
If white light shines through a blue glass window how would you
describe the process and result?
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
BTW below is the reference re
Recent work by Christian Beck at the University of London and
Michael Mackey at McGill University may have resolved the 120 order
of magnitude problem. In that case dark energy is nothing other
than zero-point energy. Measurability of vacuum fluctuations and
dark energy and Electromagnetic dark energy they propose that a
phase transition occurs so that zero-point photons below a
frequency of about 1.7 THz are gravitationally active whereas above
that they are not.
