Latest “Science & Technology” Posts

Introduction This post covers some of the practicalities that have to be met when building a function generator (signal generator) using an XR2206CP Function Generator kit. I assume anyone building one of these kits has some electronic and soldering experience. The Kit Instructions I bought two of these kits and I could see immediately, when… Read more: A Function Generator Built From A Kit Using An XR2206

Introduction At least one of my other posts How Distance Reduces The Power of Radio Waves requires an understanding of mathematical proportionality. In particular it requires an understanding of Inverse Proportion. So I have written this article to try and clarify it. It gives an explanation of the two types of proportion, otherwise known as… Read more: An Explanation of Direct And Inverse Proportion

This Asteroid Will Cross Earth’s Orbit Although thousands of asteroids have been discovered and their orbits determined there are thought to be many undetected ones. This asteroid will cross Earth’s orbit of the Sun every three years and is called Asteroid 2014 UR116. It was recently discovered by a Russian professor at Moscow State University, Vladimir Lipunov. It is the… Read more: Asteroid 2014 UR116 Will Cross Earth’s Orbit

This Poster Describes Cosmic Inflation and Expansion of The Universe I’m sure we’re a long way from hearing the last on Cosmic Inflation and Expansion of The Universe, but here is a SPACE.COM chart briefly explaining inflation of the universe from a pinpoint to its present day size. On 30th January 2015 Space.com announced: Inflation… Read more: Cosmic Inflation and Expansion of The Universe

Observing The Reaction Of Dry Ice In Water I always wanted to try this (put dry ice in water) and last year I got the opportunity. When I bought some meat from Donald Russell it was delivered packed in dry ice. Dry Ice is frozen CO2 i.e. solid carbon dioxide. This dry ice was used to… Read more: Dry Ice In Water

There is a new class of objects in the Solar System – Dwarf Planets – which now includes Pluto. See the poster below from SPACE.COM. Since this poster was produced there has been an addition – Sedna. Take a look at Kuiper and Oort Objects. Reference Source Space.com: All about our solar system, outer space… Read more: Dwarf Planets In The Solar System

Revised On 24 December 2021 Introduction It’s an unusual flying object – this SmartInversion – that propels itself by flipping inside out. Created by engineers at Festo in Esslingen, Germany. It was originally reported in a New Scientist blog in April 2012 which is no longer online. I decided to investigate it further and found… Read more: Flipping Heck It’s A SmartInversion

It’s Been Proposed To Get Asteroid Day Established Annually On The 30th June There is a movement by astronomers, scientists, astronauts, artists, business leaders, and others, concerned for the long term safety of our species, other species, and our planet, to get Asteroid Day established on the 30th June each year commencing in 2015. “Asteroids could wipe… Read more: Get Asteroid Day Established On The 30th June

The title ‘Heating May Make Us Fat’ has no spelling mistake. Check out this article at the BBC where Dutch researchers at the Maastricht University Medical Centre recommend heating homes to no more than 19°C (66°F) because: Heating May Make Us Fat. Below that temperature (19°C) they say our bodies continue to burn calories to keep… Read more: Heating May Make Us Fat!

Students Attempt To Fold Paper 13 Times Doesn’t paper folded enough times create a stack that reaches to the moon?  Well it doesn’t here. However you would need a suitcase to carry it around if you wanted to protect yourself against being taken short. (It is toilet paper after all.) The students at St. Mark’s School… Read more: How many times can you fold paper? How about 13?