Who invented the dipping bird

Since the glass around the vapor won't contract, a vacuum is created inside the head of the bird. The liquid is the only thing that can give, and it does. Liquid from the lower half of the bird is sucked up into the head of the bird like red-shirted Star Trek extras during a hull breach. The head of the bird is now too heavy for it to stay upright, and the bird dips forward.

As it dips, a corridor is opened up between the head and the body of the bird. The vacuum can more easily suck the vapor than the liquid and vapor travels to the head until the pressure is equalized. The liquid drains back to the body of the bird, making the lower bulb heavier. The bird it tipped backwards and returns to its full upright position in. The top bulb head of the drinking bird is covered with felt.

After the felt is moistened with water and the water begins to evaporate, the temperature in the head decreases. This drop in temperature causes some of the vapor inside the head to condense, causing the pressure inside the birds head to decrease. The decrease in pressure in the top bulb causes the liquid from the bottom to be forced upward from the base.

After the bird tips over and is horizontal, the bottom portion of the glass tube is no longer in the liquid. The glass tube, now 90 degrees to the surface allows the vapor from the bottom to travel to the top until the pressure is equalized. At the same time, liquid in the column flows back to the bottom bulb.

The weight of the bird is now primarily below the pivot point, so the bird returns to a vertical position. Yet these pi An old lady is nearing the end of her days and she longs to be with the husband she has lost. So, when death pays her a visit on nigh The answer that South African far In front of you, scat Image Credit Flickr User psd Nine miles off the coast of County Kerry in the west of Ireland there are two small rocky islands peeking out Yet this That is what the name of it is.

And when you've got it, you want Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. Science Questions. How Does a Dippy Bird Work? Two equal-sized, hollow glass bulbs A long glass tube that connects the bulbs Fuzzy, water-absorbent material covering the head Two plastic legs with a pivot connection Methylene chloride in the abdomen.

Methylene chloride is an industrial paint stripper and solvent one thing that dissolves easily in methylene chloride is caffeine, so you can use methylene chloride to decaffeinate things -- see Question Methylene chloride helps makes a Dippy Bird work because it evaporates very easily -- it boils at just degrees Fahrenheit 40 degrees Celsius.

When water evaporates from the fuzz on the Dippy Bird's head, the head is cooled.