Month: August 2022

Aim:

I want to find out how to break a wine glass with my voice.

Research: 

Method:

Equipment:

•  Crystal wine glass.
• Safety glasses.
• plastic straw.

Instructions:

1. Get your equipment ready.
2. Find a safe place to work.
3. Put your straw into the wine glass.
4. Put your safety glasses on.
5. flick the top of the wine glass to find the resonance tone.
6. Hold the wine glass approximately 5 cm away from your mouth.
7. Start at a lower tone and sweep up through the frequencies.
8. The straw will bounce around at the right frequency.
9. Make sure to hold that frequency.

Results:

NONE SORRY

( This is very weird)

Discussion:

Why does the wine glass break with your voice?:

One time or another, most of us have seen a cartoon in which an opera singer uses her powerful voice to shatter glass. But can a human being really do that? The answer might surprise you because science says yes!

The laws of physics show that every piece of glass — actually, every material on Earth — has a natural resonant frequency. That frequency is the speed at which it will vibrate if struck.

For example, wine glasses are especially resonant because of their hollow, tubular shape. If you flick a wine glass with your finger, you will hear a ringing sound.

The resonant frequency of a glass could be any particular musical note. It just depends on the glass and how it was made.

For example, very fine, leaded crystal glasses are more fragile than others. Thus, it may be easier to break such a glass than a thick water glass.

Volume is another key factor. The louder the sound, the more air it displaces. Singing more loudly thus results in sound waves hitting a glass with greater force.

Breaking glass with an amplified voice has been demonstrated many times. A human voice without amplification, though, will usually fail unless the glass is quite fragile.

Even if singing isn’t your talent, you can still train and practice. If you set your mind to it, we believe you can achieve any goal you set for yourself.

Aim: 

I want to find out how sound works.

Research:

Discussion: 

What is sound?:

In physics, sound is a vibration that is in the form of an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain.

How do our ears work?:

Ears work by picking up vibrations (tiny back-and-forth movements), usually in the air or water. Then they change the vibrations into signals that the brain understands as sound. Ears also help an animal to keep its body in balance.

Can you hear in space?why?:

No, you cannot hear any sounds in near-empty regions of space. Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel.

What is an LRAD?:

A long-range acoustic device (LRAD) is an acoustic hailing device (AHD), sound cannon and sonic weapon developed by Genasys. It has been used as a method of crowd control, which has caused permanent hearing damage, having an extremely high decibel capacity (up to 160 dB measured at one meter from the device).

Wanna know more click here.

What is a brown note?

The brown note is a hypothetical frequency (that can sometimes be unable to be heard by humans.) capable of causing fecal incontinence by creating acoustic resonance in the human bowel. The name is a metonym for the common color of human faeces. Attempts to demonstrate the existence of a “brown note” using sound waves transmitted through the air have failed.

What is an Ultrasound?

An ultrasound scan, especially one of a pregnant woman to examine the baby.

Scientific meaning:

Sound or other vibrations having an ultrasonic frequency, particularly as used in medical imaging.