If you use convection ovens, you will have to bake the potatoes for 45 minutes at 375 F or 60 minutes at 325 F or 90 minutes at 300 F. Convection ovens cook faster than regular ovens so the rule of thumb is to set the temperature in convection ovens at least 25 F lower than you would set in a regular oven.
The Earth's rotation around the sun is a constant. The definition of constant is something that doesn't change or something that continues or remains steady. An example of constant is the earth's rotation around the sun.
Using constants in formulas. A constant is a value that is not calculated; it always stays the same. For example, the date 10/9/2008, the number 210, and the text Quarterly Earnings are all constants. An expression or a value resulting from an expression is not a constant.