Wednesday, May 31, 2017

Butane and Coke

A reaction occurs when we add butane liquid to a coke then we flip the bottle upside down. As seen in the video experiment, the coke bottle flew like a rocket. Butane is a flammable gas and is in liquid form if it is below 0 degree Celsius. The boiling point for a butane liquid is 0 degree Celsius which means that anything warmer than 0 degree Celsius will convert the liquid into gas.

When the butane liquid was sprayed on top of the Coke solution, they do not mix together and that is because butane liquid has a property of being non-soluble and has lighter weight than the Coke solution. By the time the butane liquid is out of the container, it is already being transformed into gas at a slow rate. Upon flipping the bottle upside down, butane's gas moves upward and the Coke solution flows downward forcing itself to the butane liquid and gas. A coke has a solution that causes a warm reaction to the butane liquid thus causing it to be converted to a gas at a faster rate. Since more gas are being released and are moving upward at a faster rate, they are trapped in the coke bottle because there is no hole where to escape upwards causing them to be compressed in the bottle until it gets full of gas thus building up pressure. Since there is a hole below the flipped bottle container, all pressure moves toward that direction producing enough force to push the coke bottle upwards with the help from the ground. If the hole where to escape is too small and the production of gas from the butane liquid is much faster than expected, there are chances that the Coke bottle cannot hold the contained pressure anymore and explodes instead.

Thursday, May 18, 2017

Blue Light and Eyes

There's a lot of product lately that filter blue light and a lot of people ask what is wrong with blue light and why it has to be filtered. It is not a new concept but lately it is becoming of an issue because we are now in an age that computers are very popular and it happens that most of the computer we use has a screen that emits blue light.

The biggest source of blue light is from the sun. We usually see white light coming from the sun but technically it consists of combination of red, orange, yellow, green, and blue light rays. Each of these rays has different wave lengths. The shorter the wave length the stronger the energy it carries and the color blue has the shortest wave length. If we remove the color blue from the white light, you'll notice that the color becomes yellowish, warmer, and more relaxing to the eye. Think of lamps and candles as an example.

The problem with our eyes is that when light comes in, it is not very good at blocking blue light. Excessive absorption of blue light's energy is not healthy because it it can damage the cells of the eye which results to slow blindness and eye strain. Blue light is not that bad, in fact we need it as a natural wake up call in the morning, it boosts alertness, elevates mood, and helps in memory and cognitive functions.