The Principles of Building Indestructible Sand Castles


If you had a formal education that touched even a little bit of composite materials in the course, you will immediately be able to recall what these amazing materials can do. For others, Composite materials, as the name suggests, are materials that are composed of two or more different kinds of materials.

In a simple case think of your body, which is, in a broad sense, a combination of skin material and bone material. These materials are designed to take advantage of the contrasting properties of, say two different materials. For simplicity’s sake, skin is soft and bone is hard. The bone gives body a solid structure, while the skin and muscle tissues enables this hard skeleton to make fluid movements – flex or bend – and still be together.

Individually the materials that make up a composite material are not very capable. But when they come together, composite materials can blow your mind. To appreciate how this simple coming together of two humble materials can create a super material, and to appreciate the mind blowing properties it can have, let us first look at what most of us have heard of – “Carbon Fiber”. We will get into the more mind bending aspect of composites after that.

Carbon Fiber Reinforced Polymers (CFRP)

Now carbon fiber itself isn’t a composite material. As the name suggests, it is a fiber of carbon. The fiber is composed of strands of carbon each of which are much thinner than a single human hair. Hundreds of these come together to form a thicker fiber. This fiber can be woven to make sheets or the carbon fiber itself can directly be used in a composite material.

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5 Things You Didn’t Know About Water Repellent Technology

Water repellent technology has advanced a lot since it was first introduced. Durable water repellent is a coating which is received by the products to make them water resistant and is made from nano structures. These nano structures are the result of the advancement in the modern chemicals and thus offer far more protection than any other thing. Here are some of the facts which makes explains how this new water repellent technology uses the concept of nano technology to help your car remain cleaner:

The Lotus Effect

The nano structures are byproducts of nanotechnology which are used to give protection to your car’s windows, windshields, rims and to the whole body. The main function of the hydrophobic coating is to act as water repellent agent making your car waterproof and increase the car’s auto wash cycles. The mechanism from which it was inspired is itself found in nature and therefore called as “Lotus effect”. This is named after lotus leaf which has self cleaning properties and insects such as butterflies and dragonflies also exhibit such properties.

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The Cocktail Party Effect


The term cocktail party effect was coined by a British Cognitive scientist Colin Cherry, in the 1950s. He was interested in understanding how people listened, by conducting a few experiments. In his first experiment, he played two different overlapped messages recorded in the voice of the same person, through headphones. The participants were asked to listen carefully and try to write one of the messages on paper. If they put in enough concentration, the participants usually succeeded.

Now, if someone asks you to describe the cocktail party effect. The formal Cocktail Party effect definition is as follows:

Cocktail Party Effect Definition:

The cocktail party effect is the phenomenon of being able to focus one’s auditory attention on a particular stimulus while filtering out a range of other stimuli, much the same way that a partygoer can focus on a single conversation in a noisy room. Continue reading The Cocktail Party Effect