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.
These dogs are also predisposed to myriad pricey health concerns, such as stomach conditions and even cardiomyopathy, giving them a shorter expected life span of 7 to 10 years. This also makes Great Danes one of the most expensive dog breeds to own â average health costs can run to $7,100 and beyond.