Optical illusion posted to Twitter shows more colour shades than there really are
This is due to the Mach Bands illusion, which is named after an Austrian physicist
Where two colours join we can see variations in shading even if they re not there
But how many colours we see could also depend on our lighting and even our sex
How many colours do YOU see? Optical illusion has divided internet again thesun.ie - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thesun.ie Daily Mail and Mail on Sunday newspapers.
How Astronomer Anton Pannekoek Planned To Storm the Heavens 07/02/2021
Dutch astronomer Anton Pannekoek combined the roles of an important socialist thinker and a prominent scientist. Photo: Wikimedia Commons.
There has always been a healthy crossover between Marxism and the natural sciences. Frederick Engels kept abreast of the latest scientific knowledge in his own time. In his work
Dialectics of Nature, Engels warned that no matter how far humans were able to perfect their forms of social organisation, a time would inevitably come when the Earth could no longer sustain organic life:
And what will happen to our solar system will happen sooner or later to all the other systems of our island universe; it will happen to all the other innumerable island universes, even to those the light of which will never reach the Earth while there is a living human eye to receive it.
In 1915, Albert Einstein wrote a letter to the philosopher and physicist Moritz Schlick, who had recently composed an article on the theory of relativity. Einstein praised it: ‘From the philosophical perspective, nothing nearly as clear seems to have been written on the topic.’ Then he went on to express his intellectual debt to ‘Hume, whose
Treatise of Human Nature I had studied avidly and with admiration shortly before discovering the theory of relativity. It is very possible that without these philosophical studies I would not have arrived at the solution.’
More than 30 years later, his opinion hadn’t changed, as he recounted in a letter to his friend, the engineer Michele Besso: ‘In so far as I can be aware, the immediate influence of D Hume on me was greater. I read him with Konrad Habicht and Solovine in Bern.’ We know that Einstein studied Hume’s
物理教育：始于"集邮"，终于"思想"|物理学|物理学家 163.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from 163.com Daily Mail and Mail on Sunday newspapers.