“What is the next big revolution in semiconductors?”
Semiconductors technology is going through a revolution. Nanosize semiconductor materials known as Quantum Dots which can give off light when illuminated are starting to be developed. Their small size allows them to be much more efficient than typical semiconductors and can give off a broader range of lights.
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High-level Radioactive Waste
“What is the byproduct of nuclear energy?”
Nuclear energy is one of the promising power sources for the decarbonized future. However, like everything in this world it comes with serious consequences. The spent Uranium fuel rods will still give off enough radiation to kill a person for a quarter of a million years, meaning that this High-level Radioactive Waste must be contained somewhere.
Image credit http://www.world-nuclear.org
“What is the second most common mineral in the world and why is it special?”
Minerals can be found all over the world. But the second most common one Quartz (SiO2) has some very special characteristics. Particularly, its crystalline arrangement exhibits piezoelectric properties, allowing for stress-induced electricity!
Image credit http://www.wikigempedia.com
“What is Clay?”
Many children around the world play with clay when they are young. But what exactly are they? Well, when natural rock or soil material is highly grounded, it can combine with a large amount of other elements overtime to make Clay. Clay’s flexibility and strength when hardened have made it useful in building materials and early writing utensils.
“How is electricity lost in copper?”
Current flow is one of the basis of operation for transformers. However, when the current will heat up the transformer, causing energy losses. These are known as Copper Losses and must be taken into account during transformer design.
Why Wind Energy has Difficulty with Black Starts
“Why does wind energy have difficulty with getting up after a blackout?”
When energy systems suffer from a blackout, black starts are used to make them come online again. However, wind energy has difficulty with black starts this since a gust may not be blowing at the necessary start times.
The Kilogram is Being Redefined
“How is the Kilogram being redefined?”
A massive shift has just happened in the physics community. For over a century our measurement for the kilogram has been based off an official block sealed in vaults below Paris. However, after many decades of work and false starts, a committee has convened to redefine the kilogram based not on an artifact of nature but instead on Plank’s constant. As a result we now have a truly uniform system of fundamental units!