“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!
How ‘Invisible Wires’ Could Improve Solar Cell Efficiency
“How can we solve the silicon wire reflectivity problem in solar cells?”
We know that PV modules have a transmission wire reflectivity problem. But some research coming out of Stanford University could change this entirely. Instead of relying upon wires to channel electrons away from the silicon semiconductors, what if we were to use gold sheets with holes in them, and tiny silicon towers on top to redirect sunlight away from the gold sheet and into the holes? This way the maximum amount of sunlight can be absorbed and reflectivity can be minimized. This is just a small example of How ‘Invisible Wires’ Could Improve Solar Cell Efficiency.
Image Credit https://news.stanford.edu
How Adding Fins can Achieve Better Thermal Management
“How can adding fins help thermal management?”
In engineering, objects can overheat from a variety of operations. As a result, they will need some form of thermal dissipation. But how can we do this? Well, let’s use our engineering mindsets to find out. We know that if we add more surface area to an object, then it will be more exposed to the surrounding atmosphere. And if it is more exposed, then more heat transfer will take place. So what if we were to make our system more conductive by adding fins? This is the fundamental idea of How Adding Fins can Achieve Better Thermal Management.
“How do buildings react to temperature changes?”
We have a conundrum. Temperatures change throughout the day, but inside a building it’s supposed to stay constant. And since some buildings are better about it than others, how can we quantify this phenomenon? Well, since this concept is a lot like inertia, Architectural Engineers have decided to call this Thermal Mass.