Articles written by Harry P. Schlanger

The decibel meter measures sound pressure levels at a distance from the source. Its response is modeled on the human ear, which perceives loudness in logarithmic fashion.

Aug 6, 2008 - Harry P. Schlanger

Why is it, that if a person hides from us around the corner of a building, this person can still hear the sounds we make, even if there are no reflecting surfaces nearby?

Aug 2, 2008 - Harry P. Schlanger

Sounds are pressure waves reaching our hearing apparatus by the movement of surrounding air molecules. Studying waves helps us to understand basic transport mechanisms.

Aug 1, 2008 - Harry P. Schlanger

Transformers are commonly made by winding two coils around an iron core. Their function? Supply voltages needed to drive a myriad of electronic gadgets and equipment.

Jul 21, 2008 - Harry P. Schlanger

With the right, but relatively inexpensive equipment, anyone can produce a professional looking video and publish it on the web.

Jul 15, 2008 - Harry P. Schlanger

Cruise missiles strive for incredible hypersonic speeds and low altitude stealth delivery to pierce the defenses of target ships.

Jun 30, 2008 - Harry P. Schlanger

Why is it when a magnet is moved in the direction of a copper wire coil, a current can then be measured in the coil?

Jun 25, 2008 - Harry P. Schlanger

An electric current creates a curling magnetic field. When placed in an external field, a force acts on the wire. This magnetic force is what drives the electric motor.

Jun 21, 2008 - Harry P. Schlanger

Magnets are fascinating objects for anyone ranging from the child to the engineer. They can be a source of fun and we can also probe and quantify their curious properties

Jun 18, 2008 - Harry P. Schlanger

Did crude oil originate from inorganic constituents deep in the mantle of the earth? Or, was genesis from organic material lying at relatively lower depths.

May 26, 2008 - Harry P. Schlanger

A diode consists of p-type and n-type semiconductor materials joined together. One may approximate an "ideal" diode to a switch and simplify analysis of simple circuits.

May 10, 2008 - Harry P. Schlanger

Research suggests the Australian drought is not caused by climate change. Households are burdened by water shortages but water is diverted towards wrong agriculture.

Apr 19, 2008 - Harry P. Schlanger

An industry application written in Access 2007 is presented for inspection to learn how applications can be made more professional, using macros and VBA programming.

Apr 17, 2008 - Harry P. Schlanger

Macros are available across the full range of MS Office 2007 products. Described are ease of learning, writing and running macros, and security risks.

Apr 11, 2008 - Harry P. Schlanger

Hundreds of social networking websites exist, such as Myspace, Facebook and Digg. These types are evolving from just providing content, to users offering practical help.

Apr 10, 2008 - Harry P. Schlanger

Users of MySpace wishing to view their own Profile images can store images on a hosting site such as Photobucket, then link to them using generated HTML script.

Apr 4, 2008 - Harry P. Schlanger

There are only 44 known Mersenne primes. GIMPS provides free software for people to search for the next Mersenne Prime and may claim award prize money if successful.

Mar 28, 2008 - Harry P. Schlanger

The Sieve of Eratosthenes is a simple search technique for finding prime numbers. Primes have been in use only recently, mainly in the computer security industry.

Mar 27, 2008 - Harry P. Schlanger

GanttProject is free user friendly project management software for private or business use. New users may view an online video tutorial to fastrack producing results.

Mar 26, 2008 - Harry P. Schlanger

Games programming is fun for all ages. GameMaker has a user-friendly, intuitive interface and is free to download. Make your first game and share with others on the web.

Mar 24, 2008 - Harry P. Schlanger

A database design begins with identifying entities from business data. Tables are designed following conventions, and linked. Only then are tables populated with data.

Mar 22, 2008 - Harry P. Schlanger

Time series photography starts with a rule to be followed. Exposures are taken at regular intervals and time elapsed is exhibited by showing a clock in the photographs.

Mar 22, 2008 - Harry P. Schlanger

Beginning photographers can create inexpensive, knockout panoramic views with a simple digital camera by stitching photos in a standard graphics program like MS Paint.

Mar 21, 2008 - Harry P. Schlanger

Information for fans looking for official Beijing 2008 Olympics competitions and results. Also, data on world rankings and published world and Olympic records.

Mar 19, 2008 - Harry P. Schlanger

Melanie Schlanger is one of at least four Australian women to compete in the 100m freestyle time-trials for Beijing 2008. Only two women are selected per individual race

Mar 18, 2008 - Harry P. Schlanger

Inserting data repeatedly from a list into a form letter? Microsoft Office automates this task using Mail Merge. Use Help and powerful Wizards to make the job even easier

Mar 16, 2008 - Harry P. Schlanger