Calculations - Viewing and Printing

About our programs. How to view and print calculations. Web browsers and Java. Error messages. Copyright information

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All of the calculations on the LMNO Engineering, Research, and Software, Ltd., website have been coded using double precision and checked against known results. Even though some of the calculations show output fields to eight significant figures to save space while some show 16 significant figures, all internally perform computations in double precision. LMNO Engineering is confident that the programs work as intended; however, LMNO Engineering cannot be held responsible for any negative consequences of using the programs. Most of our calculations are written in the PHP programming language. Other programs are written in the Java language and are called Java applets. Starting in October 2013, we began converting our Java calculations, one at a time, to the PHP language so that they run on mobile devices as well as computers. Also, PHP does not require users to download the Java Runtime Environment which can become cumbersome due to updates.

If you have tried to print some of your calculations using the Print button on your browser, you may have noticed a blank region on the printer output where the numbers should be, or only the default numbers printed. Some browsers do not print the numbers.

You can try the PrintScreen key on your keyboard (or control-PrintScreen, shift-PrintScreen, or alt-PrintScreen), which may or may not work depending on your operating system. If you use the PrintScreen key with Windows, the screen image will be saved to the Windows clipboard. Then, open Microsoft Paint (comes standard on all Windows computers) and select Edit-Paste.  Then, you can print the image from Paint. If you use alt-PrintScreen, the surrounding browser information won't be included with the image. Alternatively, you can paste the image into a word processor and then print from the word processor.

Another solution is to use a screen capture program that enables printing from any browser. There are many screen capture programs available, and you can go to sites like to see what's available and then download a program. We use the program SnagIt (available from which works well and can scroll down the screen to capture the entire page, not just what's on the screen. Then the image can be printed or saved to a file.

Calculations (Java applets) do not appear
If you see the message, "Your browser does not support Java, or Java is disabled in your browser. Calculation should be here." or nothing appears where the calculation should be, then please visit . Click on "Do I have Java?". If you do not have Java, follow the instructions for downloading Java.

You have Java on your computer but get a security message when the applet tries to load
Click "Run" and "Unblock" (if present) to allow the applet to run. Our applets are safe.

If the above does not help, here is something else you can try. On a Windows computer:
Go to your Control Panel.
If Vista or above, select Classic View.
Double-click the Java icon.
Select the Security tab.
Click to Enable Java content in the browser if not already clicked.
Set the security level slider to Medium.
Click Apply then Ok.

Error messages within a calculation
If a calculation divides by zero, a "-1,INF" or "Infinity" message (depending on your browser) will be printed in an output field. This means a value of infinity was computed. Division by zero is usually due to a number being typed incorrectly, such as 0.0 for density on the Energy Equation page. A "NaN" message results from the operation 0.0/0.0 and means Not a Number.

All of our web pages and programs/calculations are copyrighted. This means that the .htm, .html, .shtml, .GIF, . jpg, and .class files are the property of LMNO Engineering, Research, and Software, Ltd., and you cannot modify, copy, or redistribute them for profit or not for profit without our permission. This limitation, of course, does not apply to the web page output (what you see on the screen). You may print out any of the screens on our website and photocopy, distribute, and use them for profit or otherwise without limitation so long as you include our copyright notices - this allows, for example, engineering consulting firms to include our web pages in their reports to clients.

© 1998-2015 LMNO Engineering, Research, and Software, Ltd.  All rights reserved.

LMNO Engineering, Research, and Software, Ltd.
7860 Angel Ridge Rd.   Athens, Ohio  45701   USA   (740) 592-1890