While it is easy to make comparisons between the pupil of the eye and the f-stop of a camera or between the retina of the eye and photographic film, once we get past the basic similarities of the optics of the two systems, comparisons begin to rapidly break down. The eye is not only much more complex than a camera and its film, but the two imaging devices function by different chemical mechanisms.

Archived article in PDF format

 

Archived article in PDF format

Archived article in PDF format

Archived article in PDF format

Archived article in PDF format

 

Archived article in PDF format

 

Archived article in PDF format

 

Archived article in PDF format

 

Archived article in PDF format

 

Archived article in PDF format

In the wild world of business, successful negotiating is the key to all transactions that leave both the buyer and seller feeling good about conducting business in the future.  Isn't that the goal of a successful business, especially in the industrial world?

A heat pipe is a simple device that can quickly transfer heat from one point to another. They are often referred to as the "superconductors" of heat as they possess an extra ordinary heat transfer capacity and rate with almost no heat loss.

Archived article in PDF format

"Kidney dialysis"....a scary phrase to hear.  When it becomes necessary, it means that a patient's kidney have ceased doing their job or are no longer able to perform their job adequately. 

The purpose of this article is to look at how drugs are developed today in the modern world and how the chemical engineer is instrumental in the development of new drugs.  Let's first take a look at how the development of a new drug begins.  It is interesting to also know that on average it takes 12 years for an experimental drug to travel from the lab to your medicine cabinet.  Only 5 in 5,000 compounds that enter the preclinical testing phase actually make it to human testing.   One of these five drugs tested in people is approved. 

Imagine a device no bigger than a credit card that could extract your DNA from a drop of blood and map your entire genetic code while you wait. Within a short period of time the proneness to any illness or disease could be mapped and studied. This is not a snippet from a fiction movie. Biologists and engineers will have ONE working in just a few years, because the tool that makes it possible, a genetic microarray known as the " DNA chip ", already exists. Able to scrutinize tens of thousands of genes at once, the DNA chip's astonishing abilities are astounding biologists.

Many carbon monoxide detectors sense the colorless, odorless gas by oxidizing it in the presence of a platinum oxide catalyst and measuring the degree of oxidation. The degree of oxidation is measured by monitoring temperature changes.

Research in the field of embryology and genetics has exploded over the past decade. New advances in in-vitro fertilization and genetic screening are leading to new procedures in which human embryo cloning will be possible in the near future.

Chlorine can be unpleasantly detected by your nose at concentrations as low as 3 ppm.    It's toxic to humans in its elemental form.  It can react explosively with turpentine, ether, ammonia, hydrocarbons, hydrogen, sawdust, and phosphorus.

This article will be of special interest to those of you who enjoy eating at fast food restaurants on a regular basis.  Chances are that if you have a high fat diet, along with other risk factors (such as smoking, diabetes, and high blood pressure just to name a few), that eventually you will end up with a condition called atherosclerosis, or plaque formation in the arteries.

The study of biometry if it has not already edged its way into your life, it will certainly do so in the future.   It could be something as simple as watching the newest movie released that introduces you to biometry or it could be something dramatic such as if you decide to commit a criminal act.  

You're probably familiar with Nutrasweet^TM and Sweet & Low^TM and perhaps a few other artificial sweeteners.  Ever wonder if they're safe?

Chrysotile asbestos was widely used as a building material prior to the 1970's.  Asbestos was used for fire protection, moisture control, and thermal insulation. 

If you're in England, Ireland, or Australia anytime soon you want to try the newest frozen drinks to hit the market...or maybe not.  They're called Alcopops. 

Ever wondered just how cold you get a beer before it freezes.  Making a few reasonable assumptions and working through a fairly simple chemistry problem will reveal the answer.