In this illusion by Richard Russell, the same face appears to be female when the skin tone is made lighter (left image) and male when the skin tone is made darker (right image).
The illusion works because changing the skin tone affects the face’s contrast – the difference between the darkest parts of the face (lips and eyes) and lightest parts (the skin).
Few would regard facial contrast as a defining feature of either sex, but in fact, contrast is on average higher in females than males.
Even without consciously knowing it, our brains are attuned to the difference in contrast between the sexes, and so contrast is one cue the brain uses to determine gender. When other cues are removed, contrast can be the deciding factor.
Photographed in 2014-09 along Grand' Rue, Montreux, Switzerland ~~~
For English speakers, the bus in front is Very Funny :-)
In case you are curious:
- Vevey-Funi is Vevey-Mont Pelerin funicular station in Vevey.
- Left red arrow in the upper pic: Eurotel Montreux, Grand' Rue 81, 1820 Montreux, Switzerland
- Right red arrow: Fer de Lance, Grand' Rue 74, 1820 Montreux, Switzerland
For those who know Chinese ... I photographed this funny exit sign in Málaga Cathedral, Málaga, Spain in 2017 June.
Instead of blaming the clueless Spanish sign maker, perhaps the whip should be applied to Google.
Do a Google translate of the Spanish word "Salida" into Chinese, and you get 產量.
The Spanish sign maker was merely following the maxim "In Google We Trust" ... a bit worrying in a cathedral :-)
(產量 means something along the line of: Production output / yield ... not "Exit")
Walpa Gorge is a gorge between two of the highest domes in Kata Tjuta (The Olgas), Northern Territory, Australia.
Here is a rare, but most stunning scenery of water pouring down the cliff faces of the gorge:
The photograph was taken in 2013-05 in pouring rain. The rain ruined my camera ... but to be able to witness such a scene is well worth it.
Photograph courtesy of Ricky who was mad enough to be with me in that trip.
As of today, I can't find any picture posted by others on the internet of the gorge in the rain.
The 2 photographs here are Soft Tree Ferns, Dicksonia antarctica. They have fallen or bent into an arch. On reaching the ground, the stems turn vertical and continue to grow and hence having the appearance of giant caterpillars crawling on the forest floor.
Although Dicksonia antarctica is a common species in Australia, seeing them in a caterpillar state is quite rare.