HP 39GS hp 39gs_user's guide_English_E_HDPMG39AE13.pdf - Page 177

To access the menu of program constants: 1. Press . 2. Press . 3. Use the arrow keys to navigate through the options. 4. Click and then to display the number assigned to the option you selected in the previous step. The use of program constants is illustrated in more detail in "Programming" on page 18-1 Physical constants There are 29 physical constants-from the fields of chemistry, physics and quantum mechanics-that you can use in calculations. A list of all these constants can be found in "Physical Constants" on page R-16. To access the menu of physical constants: 1. Press . 2. Press . 3. Use the arrow keys to navigate through the options. 4. To see the symbol and value of a selected constant, press . (Click to close the information window that appears.) The following example shows the information available about the speed of light (one of the physics constants). Using mathematical functions 5. To use the selected constant in a calculation, press . The constant appears at the position of the cursor on the edit line. 13-25