Applied Physics

A “mechanically programmable” metamaterial held by Bastiaan Florijn, Leiden University. Photo credit: Ben P. Stein

By Ben Stein, Inside Science

(Inside Science Currents Blog) -- It’s rare when a scientific term is both cool sounding and precise, but the word “metamaterial” might just fit the bill. Although they are made from small, ordinary building blocks such as rods, circles or sticks, metamaterials have striking properties that often do not occur in the natural world.        

by Marsha Lewis, Inside Science

(Inside Science TV) – Scientists often examine matter that is invisible to the naked eye. This hidden atomic world is a mystery for most people, but now a scientist created a way for people to imagine what they might see as their own bodies interact with the atoms that surround them.

A strong electric field applied to a section of the Keystone pipeline can smooth oil flow and yield significant pump energy savings, found a new study.

The physics basis is to electrically align particles within the crude oil, which reduces viscosity (thickness) and turbulence. Traditionally, pipeline oil is heated over several miles in order to reduce the oil's viscosity, but this requires a large amount of energy and counter-productively increases turbulence within the flow.
You often see demonstrations of titration using an expensive glass burette, but you can build titration lab ware using a disposable serological pipette, a solder sucker bulb, and a ring stand or support stand. For this build I’m using the tripod stand from the Thames and Kosmos Chem C3000 chemistry set.

Titration is the process of determining the unknown concentration of a solution by adding a known amount of a solution with a known concentration.

You can use a simple cat toy (laser pointer) to demonstrate the Tyndall effect. “The Tyndall effect, also known as Tyndall scattering,” according to Wikipedia, “is light scattering by particles in a colloid or particles in a fine suspension.” You can use the laser to test three different mixtures: colloids, suspensions, and solutions. I’ll demonstrate Tyndall scattering in a colloid (milk), in a suspension (dirt), and a solution (sugar) with a cat toy (Laser pointer).

Don’t forget to follow me on Twitter @SteveSchuler20.

Parts needed:

What is "Navigated Voltage"?

The short answer to the question "what is navigated voltage?" is that there is no such thing.  A slightly longer answer is that the correct term is "induced voltage".

I was searching the web for materials on transmission line electromagnetic fields when I came across the strange term "navigated voltage".  I traced the source to Wikimedia where I noted that the image below is described in both English and Russian.  The term "наведённого напряжения" on the Wikimedia page seems to have been wrongly translated as "navigated voltage".  The correct translation is "induced voltage"
I’ll demonstrate how to build a simple magnetic optical mount for a cat toy (laser pointer). Though it is simple—that is, there aren’t any fine tuning mechanisms one would find on an optical bench—it is, nonetheless, inexpensive and flexible enough to use for simple optical experiments such as demonstrating the Tyndall effect, .

I used a magnetic chip clip to clamp the laser pointer switch (a press switch) in the on position and attach the laser pointer to the Erector set mount.

High-powered microwave devices are designed to transfer energy to targets via ultra-high-frequency radio waves, in civil applications, such as radar and communication systems, heating and current drive of plasmas in fusion devices, and acceleration in high-energy linear colliders.

They can also be used for military purpose in directed-energy weapons or missile guidance systems. 
Gas turbines are used for the production of electricity and in aircraft engines and they are sprayed with a surface coating to increase their lifespan.

The coating consists of two layers, one of metal to protect against oxidation and corrosion, and one ceramic to give thermal insulation. The structure of the coating varies greatly, consisting of pores and cracks of different sizes. It is these cracks and pores that largely determine the efficiency of the thermal insulation and the length of the coating's life-span.