Category Archives: 101 experiments in seeing

Marl Twain and the Catching Reflex

Somewhere in Huckleberry Finn by Mark Twain there is a famous episode where Huck, a boy, masquerades as a girl. Wanting somewhere to stay, he is taken in by a Mrs Loftus, but after a while as they talk she … Continue reading

Posted in 101 experiments in seeing, The brain and visual perception | Tagged , , , | Leave a comment

Banknotes – Go Compare

Someone blind faces a mountain of problems. One example. If you’re blind (or have low vision), how can you know the face value of a banknote? You can rustle it in your hands but it won’t whisper its secret. In … Continue reading

Posted in 101 experiments in seeing, Assistive technology, Blindness and visual impairment, Uncategorized | Tagged , , | Leave a comment

A Tale Of Two Polychromats

  This gorgeous but rather disturbing creature is a mantis shrimp. It looks like an alien being, and indeed it has superpowers! But it’s not an alien. Nor a mantis. Nor a shrimp. But it looks a little bit like … Continue reading

Posted in 101 experiments in seeing, Animal Intelligence, Sensory perception, The brain and visual perception, Uncategorized | Tagged , , , | 4 Comments

The Colour of Nothing

Recently Belgian Artist Frederik De Wilde exhibited a square blacker than any human being has ever seen before. Blackboards look black but actually reflect as much as 10% of the light falling on them. De Wilde’s black square reflects 0.01% … Continue reading

Posted in 101 experiments in seeing, Art and vision, Blindness and visual impairment, The brain and visual perception, Uncategorized | Tagged , , , , , , , , , , | 2 Comments

Of Cats and Captchas

Recently Google announced a different kind of captcha. You know captchas. You’re trying to register with a website but it wants to be reassured you are a real you, not just a robot program masquerading as a human. So you … Continue reading

Posted in 101 experiments in seeing, Assistive technology, Blindness and visual impairment, Old age | Tagged , , , , | Leave a comment

Birds Do It, Bees Do It…

…and so do cats and dogs. (Even hedgehogs.) And reindeer. See in ultra-violet that is. I’ve often wondered if humans can share this superhuman capability (a contradiction in terms as I realize). What’s the evidence? First the background… The discovery … Continue reading

Posted in 101 experiments in seeing, Animal Intelligence, Sensory perception, Uncategorized | Tagged , , , , , , | Leave a comment

Smellacious Gardens Oh You Blind

I refreshed my potpourri with lavender just yesterday, and was suddenly telewafted back to a garden for the blind, a little garden I once knew well. I think it was called a ‘Fragrant Garden for the Blind’ or something like … Continue reading

Posted in 101 experiments in seeing, Blindness and visual impairment, Old age, Sensory perception, Stroke survivor, The brain and visual perception | Tagged , , , , , , , | Leave a comment