Category: Basics

Biogeochemistry

BioGeoChem_l

Yes. You read that correctly. Bio – life; Geo – pertaining to the earth; Chemistry – structures, properties, and related changes. You also understood what biogeochemistry is about if it sounds like the term refers to bits of many things that are vital to life on our planet. Let’s take a closer look at the […]

KidSci: Seasons

Basics

Try this interactive activity from Scientific American to see how the seasons work!   Source: Scientific American Science Buddies More seasonal stuff: Why is Summer Hot? Summer in the US – Winter in Australia

Nanotechnology: History

Basics

The capability to magnify objects by a factor of up to one million was made possible with the invention of the first transmission electron microscope (TEM) by German scientists Ernst Ruska and Max Knoll in 1931.With the TEM, it was finally possible to view things at the molecular level. Studies were made of the proteins that make up the human body. Metals were also studied. The TEM made all of this possible by focusing a beam of electrons to pass through an object, rather than by focusing light on the object as was done with traditional microscopes. Particles smaller than 200 nm were able to be viewed.

Nanotechnology: Why Bother?

Basics

You can tell a lot about an element from its position on the Periodic Table. In fact, the periodic table is designed to make information about the chemical properties of an element readily available. So all you need is the periodic table. Right? Not exactly. The periodic table tells you all about an element at the conventional scale. When you’re looking at an element at the nanoscale, things can change.

An Ocean of Air

Basics

In 1644, Evangelista Toricelli wrote, “We live submerged at the bottom of an ocean of air.” We don’t fee the force of the pressure of this fluid any more than aquatic creatures feel the force of the water on all sides. Why? Because there is a uniformity of pressure in both cases; gravity exerts pressure on all sides.

What is a Model Basin?

Basics

A model basin is a structure designed for the testing of scale model vessels. In practice, it can be used to test the design of anything that utilizes hydrodynamics before it is built in full scale. What that means, is that a 6 foot model of a ship form can be tested under a variety of conditions before construction of a full sized vessel is undertaken.

Carb-Counted Meals

Books

Eating well while watching carbs is essential for any diabetic — Type 1, Pre, or Type 2. But let’s face it, life is hectic for most of us as it is. Carb counting meals in advance is not likely to be the first thing we run to do when we have some spare time. Carb […]

Why is Summer Hot?

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Most people believe the summer is hot and the winter is cold because the Earth is closer to the sun in summer and farther away in winter. That’s just not true! The Earth is closest to the sun in January! If it’s a matter of how close we are to the sun then January should […]