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.
The Cost of Small Pets. If you want a small pet that you can actually pet without being bit or slobbered on, a guinea pig is a good choice. Those guys may be small, but they can cost you big per year. You can expect to pay $565 per year, more than a medium dog, and to pay $645 the first year.