In fact, Bejan and his colleagues found that interactions between the hand and the water when the fingers are slightly spread increase the total force a swimmer can exert, translating to faster times in the pool.
It is our expectation that as the economy strengthens later this year the (labor) participation rate will stop declining, as there is already a large pool of potential workers on the sidelines who are likely to re-enter the labor force if conditions improve.
It measures force to determine 3-dimensional position, such as deep, shallow, horizontal or vertical, and adapts the pool cleaner for maximum cleaning action.