But are colours really true?
We live in a colourful world – but it’s really only colourful, because we see it that way. If we had in our eyes only a single type of photoreceptive cell, we would only be able to see shades of one particular colour. Continue reading
The human body’s special regions
The topic of a seminar which I attended at my university sometime ago dealt with the problem of how to preserve small pieces of donor tissue for an eventual future use in replacing diseased or non-functioning body components.
The major problem, the audience was told, was to keep the donor tissue alive until it might be needed years later. And then there was also the problem of rejection of the foreign tissue. When during question time I was suggesting that one could perhaps deposit the foreign cells in the anterior eye chamber, I saw a lot of surprised faces amongst the largely non-medical audience. The anterior eye chamber of mammals, I knew, is indeed immune-privileged. Continue reading
Hot pools and thermal springs are present here and there all over the world and because of their alleged rejuvenating, health-giving, soothing qualities have generated interest amongst human populations since ancient times. The balmy hot water loosens muscles, increases peripheral blood circulation, relaxes the mind and, in combination with dissolved salts and trace minerals, may attack and remove skin parasites. Continue reading