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The popular kids whom Patty and Lauren are usually trying to impress are Jennifer DiNuccio (Tracy Nelson), the quintessential Valley girl, her boyfriend Vinnie Pasetta (Jon Caliri), a handsome greaser hood, and LaDonna Fredericks (Claudette Wells), Jennifer's friend and the sole minority character in the cast. Vinnie is cool but dense, and ...
Envelope (waves) In physics and engineering, the envelope of an oscillating signal is a smooth curve outlining its extremes. [1] The envelope thus generalizes the concept of a constant amplitude into an instantaneous amplitude. The figure illustrates a modulated sine wave varying between an upper envelope and a lower envelope.
Wave packet. A looped animation of a wave packet propagating without dispersion: the envelope is maintained even as the phase changes. In physics, a wave packet (also known as a wave train or wave group) is a short burst of localized wave action that travels as a unit, outlined by an envelope. A wave packet can be analyzed into, or can be ...
Paper Bouquet. Little hands will love cutting and gluing these paper flowers that Mom will cherish for years to come. To make: Cut flower petals and centers from bright pastel and white paper. Use ...
A standing wave, also known as a stationary wave, is a wave whose envelope remains in a constant position. This phenomenon arises as a result of interference between two waves traveling in opposite directions. The sum of two counter-propagating waves (of equal amplitude and frequency) creates a standing wave. Standing waves commonly arise when ...
A waveguide is a structure that guides waves by restricting the transmission of energy to one direction. Common types of waveguides include acoustic waveguides which direct sound, optical waveguides which direct light, and radio-frequency waveguides which direct electromagnetic waves other than light like radio waves.
Chunked: Hash browns peppered with pieces of diced ham. Diced: On the flip side, this order refers to hash browns with diced tomatoes. Peppered: Here’s a fairly intuitive one; these hash browns ...
A halogen lamp (also called tungsten halogen, quartz-halogen, and quartz iodine lamp) is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as iodine or bromine. The combination of the halogen gas and the tungsten ...