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.
Pet owners face bills of up to Â£17,000 for the total cost of owning a cat or dog over the animal's lifetime, according to research. A study found the typical lifetime expense of keeping a dog for the average canine lifespan of 13 years is around Â£16,900. The equivalent figure for cats stands at Â£17,200 over the average lifespan of 15 years. The research also indicates that if a pet dog lives for 20 years the fees can reach Â£27,000.