Vacuum Distillation

distillation performed under reduced pressure. Since a reduction in pressure also reduces the boiling point of substances it means that certain substances which at normal pressures would decompose (break down), can be distilled.

Taken from Dictionary of Science

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Vacuum distillation is a method of distillation whereby the pressure above the liquid mixture to be distilled is reduced to less than its vapor pressure (usually less than atmospheric pressure) causing evaporation of the most volatile liquid(s) (those with the lowest boiling points). This distillation method works on the principle that boiling occurs when the vapor pressure of a liquid exceeds the ambient pressure. Vacuum distillation is used with or without heating the solution.

Taken from Wikipedia

Khakies and Dental Lasers

Khakies have become an essential part of good dressing. Whether the occasion calls for dressing up or dressing down, men have always turned to khaki for salvation. They seem to go well with everything.

Taken from The Star Life

Dental lasers have existed for about twenty-six years...Unlike scalpels, lasers seal off blood vessels as they cut, leaving behind a dry area for dentists to work in. This decreases the chance of transmitting germs.

Taken from The Philippine Star

Making Life Work: Summer at Last!

You thought it would never arrive. Summer!* It's a time to relax, let down and just plain goof off--or is it?

Summer vacation is a time to be refreshed from the hectic school pace. Yet it is also a time of opportunity.

Ah, summer! Time to relax, have fun and do nothing. Or is it?

Read this timely proverb: "He who gathers in summer is a wise son, but he who sleeps in harvest is a son who causes shame" (Proverbs 10:5, New King James Version).

Sure, you can sleep in and rest up for a few days. But don't just while away your time. Summer will be over before you know it. Remember the story about the grasshopper who fiddled away the summer, while making fun of diligent ants? He was left out in the cold when the snow fell. Here are a few tips toward a sensational summer:

Have fun! Enjoy pursuits you've been wishing you had time for.

Broaden your experience. Expand your education through new and challenging adventures. Watch for worthwhile chances to travel. See some local sights you have missed.

Spend time with your family. With schoolwork and activities out of the way, you can suggest and plan outings to build closer family relationships.

Make some money. If you want to save for college, but that microcomputer or take that trip, now is your chance to prepare. A summer job can also add to your education and help you get ready for future employment.

Prepare for next term. Get a jump on the coming semester by reading ahead for book reports, or by starting extra credit projects.

Above all, don't waste those precious weeks. Really use the time, taking care to avoid anything you will look back on with regret.

- By Jim Roberts

* Sorry. Those of you in the Southern Hemisphere will have to wait a bit longer!

Taken from Youth 90 magazine