Cymatics – Top 10 Most Amazing Facts

Here are the top 10 Most Amazing facts about cymatics, a little known but fascinating field of study spanning art, science and medicine. Most people know cymatics as some beautiful geometric patterns made with sound waves. But there is more to cymatics than meets the eye; read the facts below to get a glimpse into…

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Five Easy Crockpot Recipes

I am a huge fan of crockpots. In fact, I just bought a second crockpot a few weeks ago. My old one works just fine, but it’s a bit small and I wanted one that would fit an entire roast or turkey breast without having to cut the meat first. One of the advantages of…

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What Is a Polyurethane Duct Board?

Ducts are widely used today in HVAC (heating, ventilation and air conditioning). Their main purpose is to serve as a passage for air. They are important in maintaining ideal indoor air temperature and quality. For this reason, ducts should be able to resist external temperatures to maintain the air flowing through them at a constant…

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Simple Binary-Weighted and R/2R Ladder DAC

A simple 4-bit digital-to-analog converter that is constructed from a digitally controlled switch (74HC4066), a set of binary-weighted resistors, and an operational amplifier. The basic idea is to create an inverting amplifier circuit whose gain is controlled by changing the input resistance Rin. The 74HC4066 and the resistors together act as a digitally controlled Rin…

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Which Remedies For Baldness Work?

WHICH REMEDY FOR BALDNESS WORKS? With each remedy for baldness I have split up into two categories: “drugs” and “natural”. Both remedies for baldness are said to work to a degree. The drugs (creams and pills) have had various clinical trials performed on them, but on the downside they are occasionally susceptible to unwanted side-effects.…

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