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What is it called when an electrical signal causes a crystal to vibrate at a definite frequency?
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What does a IC 555 do in a buzzer circuit?
The IC You speak of, commonly referred to as a 555, is a multivibrator. Simply put, it can be configured to produce voltage pulses in some order.In the case of a buzzer circuit, it is used to vibrate with a certain frequency - this frequency is then driven to the speaker and is heard as the 'buzz'. And thus, it's a frequency source.
What is a sonar transducer?
A sonar transducer is the element in the sonar apparatus that turns the electrical signal into sound, which is mechanical energy, and then does the opposite for returning signals. A generator of some kind creates and amplifies the electrical signal, it is directed to the transducer, which then makes the conversion, and the pulse is sent out. The transducer then "listens" for returning energy, and converts anything that comes back into an electrical signal which is sent to the receiver. Sonar is (briefly) the use of sound (which is mechanical energy) to "look at stuff" in in water or other media. An electrical signal is generated by the equipment, and it is changed into mechanical energy by a special crystal in the same way a speaker changes electrical energy into sound we hear. The transducer is a piezoelectric crystal that works on the principle of the same name. Let's look at a transducer and see how it works, but first let's see what the underlying physics says about it. Piezoelectric crystals are crystals that change shape when we apply a voltage across the crystal. Depending on the placement of the leads that apply the voltage and the orientation of the crystal, it will expand or contract to a DC voltage. If we reverse the polarity of the applied voltage, the crystal will contract or expand (respectively) in just the opposite way. Applying an AC voltage causes the crystal to respond in that same way, and it will vibrate. These vibrations travel through the water or other media we are applying it to. The sonar transducer is a crystal mounted in a "holder" or some kind. It has electrical leads attached. The whole of this is "packaged" appropriately depending on whether it is going to be mounted on the hull of a vessel or held in the hand by an operator. A link is provided to a group of pictures of different types of transducers posted at photobucket. Surf on over and have a look.
How does the electronic siren works?
An electric siren is based on the principal of electrical energy and signals being converted into sound. Electrical inputs enter the a speaker through circuitry. In turn these signals are vibrate the air through the speakers function. Electrical sirens are in fact speakers, but there are mechanical sirens which use motion to drive the sound making assembly.
Explain the working of piezeoelectric oscillator?
A piezo-electric material is one who's physical dimensions (size) noticeably change when a current is passed through it. So if an AC (alternating current) is passed through a piezo-electric material, it itself alternates, or oscillates. This type of material is exploited in Electron Microscopes and Atomic Force Microscopes, which is how they are able to get such small, yet precise images.
Can an object vibrate at the wavelength of light?
No object can vibrate at the wavelength of light. wavelength of light depends on the intensity of light and electron movements.
How rapidly does Quartz vibrate?
Quartz vibrates when a voltage is applied between opposite faces of a crystal. The frequency of the vibration depends on the thickness of the crystal, and on the direction of the faces compared to the natural planes in the crystal structure.
What is the quartz technology of a watch?
A quartz crystal can be induced by an electrical current to vibrate. This property is used to provide a signal to drive the mechanism of a watch. The frequency of the vibration can be set by the correct cutting of the crystal's size and shape, and is highly accurate and stable. By choosing the appropriate frequency of the crystal [usually in the hundreds of thousands of cycles per second [measured as 'hertz'] and dividing this frequency down to one per second a signal can be made to drive a motor or electronic display etc. once per second with great accuracy.
What is the technology of a watch?
A quartz crystal can be induced by an electrical current to vibrate. This property is used to provide a signal to drive the mechanism of a watch. The frequency of the vibration can be set by the correct cutting of the crystal's size and shape, and is highly accurate and stable. By choosing the appropriate frequency of the crystal [usually in the hundreds of thousands of cycles per second [measured as 'hertz'] and dividing this frequency down to one per second a signal can be made to drive a motor or electronic display etc. once per second with great accuracy.
What is the physical standard used to establish the length of a second?
a crystal when cut to specific dimensions will vibrate at a particular frequency when an electric potential is applied across it. The length of the second is standardized by the Cs crystal.
When a sound wave causes an object to vibrate at its natural frequency it is?
vibrate at its natural frequency. WHS AOEC
When a sound wave causes an object to vibrate a its natural frequency is?
vibrate at its natural frequency. WHS AOEC
The frequency that an object wants to vibrate at?
Its resonant frequency.
How does quartz work in the temperature sensor inside the vial in freeze dryer?
A quartz temperature sensor inside a vial in a freeze dryer works by measuring the frequency of the quartz crystal. The quartz crystal is designed to vibrate at a specific frequency when it is exposed to a certain temperature. As the temperature inside the vial changes, the frequency of the quartz crystal changes as well. The frequency is then measured by the temperature sensor and compared to a reference temperature, allowing the freeze dryer to accurately measure and control the temperature of the vial.
What is the technology of quartz crystal timepieces?
This site will give you excellent information, here is an excerpt and the site:Enter the Quartz Clock. Quartz timepieces use the nature of the quartz crystal to provide a very accurate resonator which gives a constant electronic signal for timekeeping purposes. Quartz crystals are piezoelectric, which means that they generate an electrical charge when mechanical pressure is applied to them. They also vibrate if an electrical charge is applied to them. The frequency of this vibration is a function of the cut and shape of the crystal. Quartz crystals can be cut at a consistent size and shape to vibrate at thousands of times per second, making them extremely stable resonators for keeping very accurate time.* http://www.physlink.com/Education/AskExperts/ae559.cfm
How does singing break glass?
Singing causes air to vibrate. if the vibration is at the resonant frequency of the glass crystal structure, the structure absorbs the singing Energy. If the singing is intensity is high enough and at the resonance frequency, the crsytal bounds will break and break the glass.
Can you Break crystal by singing?
Everything resonates at a certain frequency, from tuning forks to buildings to the Earth itself. When a resonant frequency of a particular object is hit, that object with vibrate in sympathy with that frequency. If the frequency is of a high enough amplitude, the vibrations will cause an object to eventually disintegrate. So the answer is YES, if a singer (well trained) directs all of the sound energy through their vocal chords at a piece of crystal and they are singing at the PRECISE frequency that the crystal resonates at, the glass will indeed break. I've seen it with my own eyes. Hope this helps, Dr. Ron
What is the units of resonance frequency?
Resonance is the tendency for something to oscillate or vibrate at certain frequencies more than other frequencies. The two most recognized and noticeable types of resonance are mechanical and electrical although many other examples may be cited. We are able to notice resonant frequencies in a variety of situations. A string in a musical instrument will vibrate at a specific frequency due to its resonant frequency. A child's swing will move at a constant frequency, also due to the resonant frequency. In electrical circuits, resistance, capacitance and inductance can be used to generate oscillations at certain frequencies.
