Lewisia - Cliffmaids in polarized UV

[Dr Klaus Schmitt]

So today about Lewisia - Cliffmaids in reflected and polarized light.

Look at its petals and especially its anters!

Works beautifully now! A.K.

 

[Asher Kelman]

Klaus,

An interesting finding. Your GIF appears as a broken link when I open the thread and doesn’t load.

However if I press the “Edit” button, (which is always my privilege as an Administrator), your amazing video comes to life, as the UV polarization angle changes and the petals and stamens pulsate in brightness!

@ everyone else: Do you see the GIF when the thread is loaded or does the link appear broken too?

Asher

 

[Dr Klaus Schmitt]

Replaced it with a small version, this seems to work. Have posted here before with similar large ones ("Saxifraga") and this did work then ...hmmm

 

[Dr Klaus Schmitt]

Replaced it with a small version, this seems to work. Have posted here before with similar large ones ("Saxifraga") and this did work then ...hmmm

direct upload also does not work "too large to process" as it is 6.05MB large, even reducing down to 3MB does not work...

 

[Asher Kelman]

direct upload also does not work "too large to process" as it is 6.05MB large, even reducing down to 3MB does not work...

Interesting that in “Edit Mode”, the too large GIF worked.

 

[Asher Kelman]

So, Klaus,

Do we have any idea how the insects perceive the angular changes. Are they able to change the polarization angle with a membrane or a current through a cell layer, or do they perceive the angle of light as different brightness of a unique part of the energy spectrum of wavelengths as a kind of “chromaticity”?

 

[Dr Klaus Schmitt]

So, Klaus,

Do we have any idea how the insects perceive the angular changes. Are they able to change the polarization angle with a membrane or a current through a cell layer, or do they perceive the angle of light as different brightness of a unique part of the energy spectrum of wavelengths as a kind of “chromaticity”?

No idea, haven't foud nothing so far how they perceive that. Guess we may never now that...