1.   This measures the ratio of the fair price of the share to the book price taken from the balance sheet.

2.   Another method scientists use to infer geological history is to measure the ratio of a radioactive form of argon to a nonradioactive form.

3.   It depends on vaporizing a small sample from the surface of the stone so as to measure the ratio of oxygen isotopes.

4.   The index measures the ratio of weight to height.

5.   You can always use this stuff to measure the ratio of the circumference of your pizza to its diameter.

6.   By measuring the ratio of the isotopes, it is possible to establish how long ago the sample was melted.

7.   In the current method, tests measure the ratio between testosterone and epitestosterone.

8.   The chemical dating system is known as argon-argon dating because it works by measuring the ratio of two isotopes of argon.

9.   Urine tests measure the ratio between testosterone and epitestosterone.