Soda ash is the common name for sodium carbonate (with the chemical formula of Na2CO3). It is actually an acidic substance, with the physical properties of a crystallized heptahydrate. Soda ash can, however, be broken down into a monohydrate—like when it is in white, powdery form. Soda ash is made...
Martin Luther King Speech - Beyond Vietnam Martin Luther King Speech Beyond VietnamNew York, N.Y.4 April 1967 Mr. Chairman, ladies and gentlemen, I need not pause to say how very delighted I am to be here tonight, and how very delighted I am to see you expressing your concern about the issues...
In pharmacology, a tincture is an alcohol-based derivative or extract taken from a fresh herb or any other plant material. Tinctures are often used in alternative medicine or as a dietary supplement. Only few pharmaceutical companies still manufacture medicines in the form of tinctures. But the...
Lincoln College Online is a division of Lincoln College of Technology, which was founded in 1946 as a practical skills college.
Ordinary glass is quite useful, but it has its limitations. For example, it is quite fragile. With just a little pressure it can shatter, exploding into sharp shards that can hurt anyone in its vicinity. It is also quite vulnerable to extreme heat or cold, and can crack if placed in these temperatures....
Even as little as seven years ago, trying to obtain video on the Internet, much less watching a movie, was a complete nightmare. With much of the Internet still on dialup, it could take hours to download even a three minute music video, days for a feature-length film. Furthermore, the video-watching...
Carnegie Mellon University was established in 1900 by industrialist and philanthropist Andrew Carnegie as a small technical school. Today, Carnegie Mellon operates from a 140-acre campus three miles from downtown Pittsburgh. It also owns and maintains 81 buildings in the Oakland and Squirrel Hill...
A resistor is one of the most important parts of an electrical circuit. As its name implies, it “resists” the electricity, which courses through its two terminals. The resistor then lowers the voltage to safe levels. Resistance can be quantified and measured in ohms (which borrows its name from...
Phenolic is a term for a resin that is made from a combination of phenol and an aldehyde. Phenolic is usually used when rigid materials are required, for example in creating moldings for various products, or on bearings, insulation or binders. Phenolic as a term can also be used in order to...
Podcasting is a term used to refer to broadcast programs that are made available to people online using subscription feeds like RSS or Rich Site Summary. The podcasts are designed to be played in portable media devices like MP3 players and iPods, although one can also use the media players on...
