What is a flotation tank?
500 kg of Epsom salts are added to 1000 litres of water, creating a 30 cm deep solution, which is heated to 35.5 degrees C (skin temperature).
The temperature of the water means that once you are settled in the tank, it is virtually impossible to distinguish between parts of the body that are in contact with the water, and those that aren’t, in effect “fooling” the brain into believing that the person is floating in mid-air.
Actually glasses are symmetrical and humans are drawn to symmetrical things and that’s why certain shapes or types of plants, etc, are more attractive to the human eye. Glasses, especially sunglasses, even out the face and make it appear more symmetrical.
And that is science friends