An isotonic contraction can be concentric, which is where the muscle shortens as the fibres contract or eccentric, where the fibres contract as the muscle lengthens. When a muscle contracts with no resulting movement, it is an isometric contraction. Page: 1  1. 2  2.
If you will use a different paint on your home's trim, subtract 21 square feet for every door and 15 square feet for each typical window. Divide the final figure by the square-foot coverage specified on the can of paint to determine the number of gallons you will need for one coat.
How Much Paint or Stain do I need? Determining the right amount of Paint or Stain for your project is important. In general it is less expensive to buy a gallon than 2 quarts, so it's better to have enough. Also, a little leftover paint is always good to label and have handy for touch ups.