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.
Dog Food: $150 â 500. The cost of your dogâs food will depend on his size and what you feed him. The bigger the dog, the more he eats, and premium dog food is more expensive than off-brand kibble. You can save money with a generic food, but it could be at the expense of your dogâs health.
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.