DEFINITION of 'Actuarial Science '. A discipline that assesses financial risks in the insurance and finance fields using mathematical and statistical methods. Actuarial science applies the mathematics of probability and statistics to define, analyze and solve the financial implications of uncertain future events. Traditional actuarial science largely revolves around the analysis of mortality and the production of life tables, and the application of compound interest. Next Up.
The result is a smaller difference between high and low tides and is known as a neap tide. Neap tides are especially weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Neap tides occur during quarter moons.
A tide that occurs when the difference between high and low tide is least. Neap tide comes twice a month, in the first and third quarters of the moon. Middle English neep, from Old English n&emacron;p(fl&omacron;d), neap (tide). Neap tides occur when the sun, earth, and moon form a right angle and the gravitational pull of the sun counteracts the pull of the moon. neap-tide. The tide which occurs just after the first and third quarters of the moon, when there is least difference between high tide and low tide.