"0.25 Hertz" means "0.25 per second".
(0.25/second) x (60 sec/minute) x (3 minutes) = 45
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wavelength. The larger the frequency, the smaller the wavelength.
The product of (wavelength) times (frequency) is always the same number ... the wave's speed. So if one of them doubles, the other one must drop by half.
this is not how they are made naturally but how they are made for diagnostic uses: ultrasound waves are made by applying a current that is similar to the natural frequency of the piezoelectric quartz crystal, when this is applied to the crystal they produce ultrasonic waves! ADDED: As a point of detail, quartz is rarely if ever used now, replaced by much more sensitive, artificial, piezoelectric ceramics.
No. Visible light is actually a very small part of the electromagnetic spectrum which ranges from very short wavelength high frequency electromagnetic waves such as gamma radiation up to very long wavelength, low frequency electromagnetic waves such as radio waves. For more information on the electromagnetic spectrum and the small part of it made up of visible light, see the related link.
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The number of circular revolutions made by the charged particle in one second. f=1/T unit of frequency is Hertz
Pitch is another name for the frequency of sound waves . . . that is, how close the waves are together. Pitch is a term usually used in terms of music.
No ultrasonic waves are not a form of electromagnetic wave. Ultrasonic waves are nothing more than high frequency sound waves. They can be made with a suitable speaker or transducer.
wavelength. The larger the frequency, the smaller the wavelength.
Microwave cookware can be made from a variety of materials. The biggest material used is polypropylene to make microwave cookware. Glass and organic minerals can also be used to make microwave cookware.
The product of (wavelength) times (frequency) is always the same number ... the wave's speed. So if one of them doubles, the other one must drop by half.
this is not how they are made naturally but how they are made for diagnostic uses: ultrasound waves are made by applying a current that is similar to the natural frequency of the piezoelectric quartz crystal, when this is applied to the crystal they produce ultrasonic waves! ADDED: As a point of detail, quartz is rarely if ever used now, replaced by much more sensitive, artificial, piezoelectric ceramics.
No. Visible light is actually a very small part of the electromagnetic spectrum which ranges from very short wavelength high frequency electromagnetic waves such as gamma radiation up to very long wavelength, low frequency electromagnetic waves such as radio waves. For more information on the electromagnetic spectrum and the small part of it made up of visible light, see the related link.
The electromagnetic spectrum is the name for the range of electromagnetic waves when they are placed in order of increasing frequency. The electromagnetic spectrum is made up of radio waves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays.
The higher the frequency the shorter the wavelength, so by the physics of sound waves, the smaller the objects that can reflect the sound back. Hence using ultrasound, with its very short wavelengths, the better the definition attainable.
sound are longitudinal waves while water waves are transverse waves