Most metals are good conductors of heat and they are solids at room temperature. Mercury is the only one in liquid state at room temperature, and has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. This is the reason behind mercury and alcohol being used in thermometer. Some of the principles of the thermometer were known to Greek philosophers of two thousand years ago.
Veterinary/Medical costs: $160 â 670. The cost of spaying or neutering a dog is $50-200 depending on the size of the dog and whether there are health conditions that can complicate the surgery. A routine veterinary exam runs from $45-150. The cost of puppy vaccinations and boosters is $20-150.
According to the veterinary charity People's Dispensary Sick Animals, the lifetime cost of owning a cat is estimated to be around Â£17,000, while a dog can cost between Â£16,000 and Â£31,000 â depending on the size of the dog and the amount it eats. Rabbits cost an astonishing Â£9,000 over a lifetime, PDSA claims.