Ultrasound Is A High Frequency Sound

1. Sound is travelling from material 1 to material 2. The density of material 1 id 25 kg ms-3 and the density of material 2 is 18 kg m-3. The speed of sound in material 1 is 1900 ms-1 and in material 2 is 18 kg m-3. The speed of sound in material 1 is 1900 ms-1 and in material 2 it is 700 ms-1.

The purpose of this experiment is to measure the speed of sound in air and to determine the effects of frequency on the speed of sound.

Ultrasonic sensors emit short, high-frequency sound pulses at regular intervals. These propagate in the air at the velocity of sound. If they strike an object, then they are reflected back as echo signals to the sensor, which itself computes the distance to the target based on the time-span between emitting the signal and receiving the echo.

Sound waves are nothing more than an energy transfer through a medium be it through a liquid, solid, or a gas. Sound pressure or intensity is measured on logarithmic scale in decibels dB which increases on an order of magnitude. For instance a quiet conversation would be around 30 dB and whereas the human pain threshold would be just over 100 dB. While the pitch or frequency of the sound is measured in hertz or Hz, the higher the hertz the higher the pitch of the sound and vice versa (Hildebrand, 2004).

An Ultrasound Technician, also known as diagnostic medical sonographers, use high-frequency sound waves to create images of soft tissue in a patient's body. Physicians use these images to diagnose abnormalities and diseases in a patient. As early as 1826, a Swiss physicist name Jean-Daniel, had effectively used an underwater bell to determine the speed of sound in the waters of Lake Geneva. In the late 1800s, physicists were working successfully towards defining the fundamental physicists of sound waves, transmission, propagation, and refraction. Lord Rayleigh was the first to describe sound waves as a mathematical equation, forming the basis of future practical work in acoustics. Lord Rayleigh famous work “the Theory of Sound” was published

Sound consists of oscillating waves of compression and decompression of a transmitting medium i.e. air or water, traveling at a fixed velocity (Støylen, 2015). The frequency of sound waves refers to the number oscillations per second, with one cycle per second is considered a unit of 1 hertz (Henderson, 2014). Sound waves oscillating above 20,000 Hz are categorised as ultrasound waves. As sound waves are a transverse wave forms this means the only variant is its frequency and wavelength despite the location in the spectrum. The wavelength is defined as the distance travelled by sound in one cycle, or the distance between two identical points in the wave cycle i.e. the distance from each oscillation (Cura Rodríguez, Seguí and Nicolau, 2012). In regards to wave forms the wavelength shows very little significance as it is inversely proportional to frequency.

Ultrasound waves, which are pictures or imaging that can be used for industrial, navigational, and security applications. Also used in medicine to view internal organs of people's bodies. They use the echo between object to show a picture or video of the internal organs, so the distance to an object can be determined by measuring the delay between the sound of an ultrasound pulse

sound waves and have the same goal in tracking the gestational age of a fetus, growth and

Once the wavelength was determined using the temperature the speed could be calculated. Both wavelength and speed are variables in the velocity of sound formula (v = ƛf ). Using algebra, frequency could be determined by substituting wavelength and speed. The percent error for this lab could have been affected by not accurately determining the point of which the sound reached its loudest point.

Before all else, how does ultrasound work? The U.S. & Drug Administration states that, “Ultrasound imaging uses high-frequency sound waves to view inside the body”.2 This means that ultrasound imaging is not damaging like

Frequency refers to the number of cycles of compressions and rarefactions in a sound wave per second, with one cycle per second being 1 hertz. While the term ultrasound generally refers to sound waves with frequencies above 20,000 Hz (the frequency range of audible sound is 20 to 20,000 Hz), diagnostic ultrasound uses frequencies in the range of 1-10 million (mega)

There are many different forms of long distance measurement, let's start with the examples from the Renaissance era.

Ultrasound or ultrasonography is a medical imaging technique that uses high frequency sound waves. It is a high pitch frequency that cannot be heard by the human ear. In ultra sound the following happens: High frequency sound pulses (1-5megahertz) are transmitted from the ultrasound machine into your body using a probe. The sound wave will travel into your body until it hits an object such as soft tissue and bone. When the sound wave hits these objects some of the wave will be reflected back to the probe. While some waves may carry on further till they hit another object and then reflected back. The probe picks up these reflected sound waves and relays them to the machine. The distance and time from the probe,

Sound is defined as the movement of air molecules brought about by a source of vibration. The ear works by picking up sound waves vibration in the eardrum, which is located inside your ear. Then the sound waves are carried through a fluid in the inner ear called cochlea, this process turns and vibrates tiny hairs that tune to different pitches of sound. Information from the vibration of the hairs stimulates nerves is then sent to the signals of the brain to be processed. The ear is similar to a microphone where sound vibrates a diaphragm, which causes electrical signals to travel through a wire to a processor. Sound is made up of characteristics which are pitch and loudness. Pitch is known as the tone of a sound wave that is

Since my project will be experimenting with sound and its frequencies, I wanted to become more familiar with sound. Starting with the basics, when using frequency, you measure in hertz (Hz). Also, sound waves are the transfer of energy without the transfer of matter. This means that waves transfer energy, but it does not give off any type of liquid, solid, or gas. Sound travels through matter, but is not matter, only energy. Frequency can be defined as the number of wavelengths to pass a point per second. When going about life we hear different sounds every day. Each sound has its own frequency depending on how low or how high the sound is. The human ear has the ability to hear sound frequencies from 20-20,000 Hz and animals such as dogs can hear frequencies of about 50,000 Hz. Sound frequencies below 20 Hz are known as infrasound and frequencies above 20,000 Hz are known as ultrasound. I will be testing frequencies from many different range, even ultrasound frequencies to determine what kind of frequencies a wine glass can sustain and what the effect of each frequency has on a wine glass. When a frequency is applied to a wineglass and other types of glass, the glass will vibrate until the glass can no longer sustain the vibration. My experiment will determine what frequencies just vibrate the glass without breaking it and what frequencies vibrate the glass to the point of breakage.