Count dates greater than or equal to another date. =COUNTIF(B2:B10,>=6/1/2014) Count the number of cells in the range B2:B10 with a date greater than or equal to 6/1/2014. Count dates greater than or equal to a date in another cell, minus x days. =COUNTIF(B2:B10,>=&B2-7) Count the number of cells in the range B2:B10 with a date greater than or equal to the date in B2 minus 7 days.
A polygraph is a machine, or a test using said machine, which measures the changes in a person's body, such as pulse, breathing rate, and skin temperature.It is used as a lie detection test.It is based on the principle that when lying, one will become nervous and have an increased pulse and need for air. polygraph is a machine, or a test using said machine, which measures the changes in a person's body, such as pulse, breathing rate, and skin temperature.
The 'lie detector' does not measure truth-telling; it measures changes in blood pressure, breath rate and perspiration rate, but those physiological changes can be triggered by a wide range of emotions.Â­.Lee, who has been performing Â­polygraph exams for 18 years, agrees that polygraphs do not detect lies.or many years, polygraphs were those instruments that you see in the movies with little needles scribbling lines on a single strip of scrolling paper. These are called analog polygraphs. Today, most polygraph tests are administered with digital equipment.