Millions saw the apple fall, But Newton asked why.
Know Physics, Know Fun.
You don’t need to understand the mathematics to be able to appreciate physics. For physics is the study of nature. Albeit the physics gets lost in the amusement, its existence cannot be dismissed.
The constructive interference of waves leads to the formation of that huge amplitude in the middle of the pool. And only when you actuate the pool by the driver at particular frequencies do you get the maximum amplitude for vibration- Resonance!
Well, the results were aesthetic. Ergo, I would suggest you make your own 3d hologram, its really worth it!
Have a Good Day!
The Crazy- Einstein Beats Phenomenon.
When two laser beams at slightly different frequencies are combined onto a screen, the resulting interference pattern produces “beats” in time (i.e. the pattern alternates between light and dark), similar to how the sound produced by two slightly out of tune guitar strings plucked simultaneously will wobble between loud and soft.
Why is this special?
In everyday life the beating of light waves is usually undetectable, because
(1) most light we see is incoherent and
(2) our eyes cannot resolve beat frequencies beyond a few tens of cycles per second.
Since visible light waves oscillate at several hundred trillion cycles per second, finding two light sources with a relative frequency difference small enough to observe by eye is generally believed to be prohibitively difficult.
We get around this difficulty by building an interferometer, which splits apart a laser beam along two paths, and then shifting the frequencies of the light beam along each path by slightly different amounts. When the beams are recombined, the interference pattern they produce will wobble at a rate equal to the frequency difference between the beams.
If you are interested, you can read about the Laser Gyroscope and the source research paper as well.
The principle underlying the working of the extravagant Noise- Cancelling headphones is, to put in a crude way 1+(-1)=0.
When two waves ( say, sound ) interfere with each other in such a way that the first wave cancels out the second wave, we call it Destructive Interference. When two waves destructively interfere with each other, we get silence! ( because the crest of the first wave cancels out the trough of the second wave and so on and so forth )
Noise- Cancelling Headphones.
Here is where it gets really interesting!
The primary function of a Noise-cancelling Headphone is to kill the ambient sound. A microphone records the ambient sound which is relayed to the speaker. The speaker produces a “destructive wave” which kills the ambient noise.
This leaves us with only the enchanted drug for the soul – Music, which gives a soul to the universe, wings to the mind, flight to the imagination and life to everything. – Plato.
Water is blue if you are talking about the water present in oceans, lakes and even your bathtub!
This is because red, orange and yellow (long wavelength light) are absorbed more strongly by water than is blue (short wavelength light). So when white light from the sun enters the ocean, it is mostly the blue that gets returned.
The hue of the sky (Azure) also contributes to the color of water.
The above phenomenon is predominant only when the depth of the water is about 1 meter.
This is why if you pour water into glass, it does not appear blue. It is colorless!
The color of water can also be altered by the particles present in water. For instance, presence of algae in water gives water a greenish color.
While high concentrations of dissolved lime gives it a torquoise color.
In extreme scenarios, water is seen to be in red and black in color.
So, what is the color of water you ask ? For all intents and purposes for everyday conversation, considering the magnitude of water present in Oceans, Seas, and Lakes, I guess it is safe to consider the color of water, as Blue!
Symphony with a Bow and a String.
Although the mere harmonical tones of the violin is soothing enough, knowing how this marvelous instrument works is something of the highest pride too.
Here’s how a violin works in layman terms.
The rosin ( rosin is the solid form of secretion from pines and conifers ) coats the cuticle layer of the horse tail strand completely.
When you pull the bow across a string, the friction causes the part that touches the string to melt
The melted rosin “plucks” the string (like a million guitar picks)
The vibration goes up and hits the bridge causing it to vibrate
The vibration goes down through the feet of the bridge through the top of the violin down the sound post and hits the back of the violin.
The hard maple back and sides causes the sound to bounce around inside the violin before it comes out of the F holes through the top
There is lots more to the violin though. We will dig deeper into the violin in the subsequent posts.
Types of Damping.
Damping is an influence within or upon an oscillatory system that has the effect of reducing, restricting or preventing its oscillations.
There are 4 types of damping:(in the order of the animations shown)
1. Under Damped System.
The system oscillates (at reduced frequency compared to the undamped case) with the amplitude gradually decreasing to zero.
2. Critically Damped System.
The system returns to equilibrium as quickly as possible without oscillating.
3. Over Damped System.
The system returns to equilibrium without oscillating.
4. Un-Damped System.
The system oscillates at its natural resonant frequency