RD Bentley

Understanding The Principles Of Distillation

Distilled water has been known since at least 200 AD, when Alexander of Aphrodisias described the process. The distillation equipment is called a still. A simple way (labeled How To Turn Salt Water Into Fresh Water) explains the process using [...]

The Circle Of Confusion Continuity

Acircle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. Life sometimes seems out of focus, and you sometimes wonder what the [...]

Quick Baofeng UV5R Program Guide

New out of the box—one must visit the Idiots Guide to programming your Baofeng UV-5R radio (W7DTG). This guide is useful especially for using repeaters with tones. I’m mostly interested in programming simplex type applications, along with local emergency frequencies. [...]

And The Satellite-Guidance System Takes Over

It was the GBU-43/B Massive Ordnance Air Blast (MOAB aka Mother of All Bombs) that was used on April 13, 2017 in Afghanistan. Designed to be delivered by a C-130 Hercules, MOAB is the most powerful conventional bomb ever used [...]

Turn Your Smartphone Into A Security Camera

Do you have a spare or an older smartphone that you are not using? You can turn that into a security camera you know. There’s an app for that and it’s called WardenCam. Installation is a breeze. Access remotely 24/7 [...]

The Latest In Coffee Trends

Are coffee connoisseurs giving up expensive coffee? Probably not. Maybe they are just buying it online and the competition could get fierce. The trend is starting to change. Read on to find the possible new coffee king. Here’s the latest [...]

QM-52 Pro Mic Arm Review

Here we go. Here is the QM-52 Pro Mic Arm Review (Q-Mic QM-52 Pro Mic Arm USB with Mount Anywhere Kit ). Now mounted on the desk and is fully functional. Here are the results. Package came early in the [...]

The Best Protein Powder

What is the best protein powder for bodybuilders? After doing a little bit of browsing through the search engine, a very popular source of protein comes to the surface: Optimum Nutrition Gold Standard 100% Whey Protein Powder Double Rich Chocolate. [...]