Laser cavity end mirrors need very precise alignment. Due to their low divergence laser beams need precise steering mirrors. For rapid prototyping on a optical table mirror mounts can be used to hold other elements besides mirrors, for example lenses often need to be aligned for minimal coma. Sometimes prisms only need two axes alignment and can be mounted on a mirror mount rather than a three-axis prism table. Critical phase matched crystals can be aligned and tuned precisely with a standard mirror mount. The same is true for small e ...

See also:

Mirror mount, Mirror mount - Types of mirror mount, Mirror mount - Operation, Mirror mount - Applications, Mirror mount - Related devices

Read more here: » Mirror mount: Encyclopedia II - Mirror mount - Applications

See also:

Mirror, Mirror - Effect, Mirror - Image in a mirror, Mirror - Composition, Mirror - Applications, Mirror - Viewing one's own body, Mirror - Instruments, Mirror - Safety and easier viewing, Mirror - One-way mirror, Mirror - Decoration, Mirror - Signaling, Mirror - Entertainment, Mirror - Mirrors in literature

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For an object with approximate reflection symmetry, a reflection in some mirror plane corresponds to a combination of: a translation if the mirror is parallel to the symmetry plane of the object, and otherwise a rotation about the line of intersection of the two planes by an angle which is twice the angle between the two planes a reflection in the approximate symmetry plane of the object (due to t ...

See also:

Mirror, Mirror - Effect, Mirror - Image in a mirror, Mirror - Composition, Mirror - Applications, Mirror - Viewing one's own body, Mirror - Instruments, Mirror - Safety and easier viewing, Mirror - One-way mirror, Mirror - Decoration, Mirror - Signaling, Mirror - Entertainment, Mirror - Mirrors in literature

Read more here: » Mirror: Encyclopedia II - Mirror - Image in a mirror

A mirror is a surface with good specular reflection that is smooth enough to form an image. The best known example is the plane mirror. The most common use is in the home for personal grooming but mirrors are also used in scientific apparatus such as telescopes and lasers, and in industrial machinery. Mirror - Effect. In a plane mirror, a parallel beam of light changes its direction as a whole, whilst still remaining parallel; the images formed by a plane mirror are virtual images, of the same size a ...

Including:

Mirror - Effect Mirror - Image in a mirror Mirror - Composition Mirror - Applications
Mirror - Viewing one's own body Mirror - Instruments Mirror - Safety and easier viewing Mirror - One-way mirror Mirror - Decoration Mirror - Signaling Mirror - Entertainment
Mirror - Mirrors in literature

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A mirror is a surface with good specular reflection that is smooth enough to form an image. The best known example is the plane mirror. The most common use is in the home for personal grooming but mirrors are also used in scientific apparatus such as telescopes and lasers, and in industrial machinery. Mirror - Effect. In a plane mirror, a parallel beam of light changes its direction as a whole, whilst still remaining parallel; the images formed by a plane mirror are virtual images, of the same size a ...

Including:

Mirror - Effect Mirror - Image in a mirror Mirror - Composition Mirror - Applications
Mirror - Instruments Mirror - Safety and easier viewing Mirror - One-way mirror Mirror - Decoration Mirror - Signaling Mirror - Entertainment
Mirror - Mirrors in literature

Read more here: » Mirror: Encyclopedia - Mirror

The most common type of mirror mount is the kinematic mount. This type of mount is designed according to the principles of kinematic determinacy. Typically, the movable frame that holds the mirror pivots on a ball bearing which is set into a hole in the fixed frame. Ideally this hole should be trihedral (pyramid-shaped). Often a conical hole is used due to easier manufacture. The frame is pivoted by means of two micrometers or fine-thread screws, tipped with steel ball bearings. One of these ball bearings rests in a V-groove, the other rests ...

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Mirror mount, Mirror mount - Types of mirror mount, Mirror mount - Operation, Mirror mount - Applications, Mirror mount - Related devices

Read more here: » Mirror mount: Encyclopedia II - Mirror mount - Types of mirror mount

In chemistry, a molecule is chiral if it is not superimposable on its mirror image regardless of how it is turned in space or reshaped by rotating bonds. Hands are also chiral — mirror images of one another and non-superimposable — and chiral molecules are often described as being "left handed" or "right-handed". The word is derived from the Greek χειρ (cheir) for "handendness". Chirality is of interest because of its application to stereochemistry in inorganic chemis ...

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Process Oriented Psychology refers to a body of theory and practice that encompasses a broad range of psychotherapeutic, personal growth, and group process applications. It is more commonly called Process Work in the United States, the longer name being used in Europe and Asia. Process Oriented Psychology - History. Process Work was founded by Arnold Mindell, then a Jungian analyst, in the late 1970’s. It has its origin in Mindell’s observation that nighttime dreams both mirrored and were mirrored in hi ...

Including:

Process Oriented Psychology - History Process Oriented Psychology - Core Ideas of Process Work Process Oriented Psychology - Levels of Experience Process Oriented Psychology - Applications Process Oriented Psychology - Process Work Links

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In optics, an aperture is something which restricts the diameter of the light path through one plane in an optical system. This may be the edge of a lens or mirror, or a ring or other fixture that holds an optical element in place, or it may be a special element placed in the optical path deliberately to limit the light admitted by the system. The aperture stop or simply the stop is the limiting aperture of the system—the aperture which restricts the diameter of the cone or cylinder of light that can enter and pass thr ...

Including:

Aperture - Application Aperture - In photography
Aperture - Maximum and minimum apertures

Read more here: » Aperture: Encyclopedia - Aperture

Doc Edgerton is generally credited with pioneering the use of the stroboscope to freeze fast motion. He eventually helped found EG&G, which used some of Edgerton's methods to capture the physics of explosions required to detonate nuclear weapons. See, for example, this incredible photograph of an explosion using a Rapatronic camera. Advancing the idea of the stroboscope, researchers began using lasers to stop high speed motion. ...

See also:

High speed photography, High speed photography - Early applications, High speed photography - Stroboscopy and laser applications, High speed photography - High speed film cameras, High speed photography - Pin register, High speed photography - Rotary prism, High speed photography - Rotary mirror, High speed photography - Streak shadowgraph and motion compensation photography, High speed photography - Video, High speed photography - CCD, High speed photography - CMOS, High speed photography - Infrared

Read more here: » High speed photography: Encyclopedia II - High speed photography - Stroboscopy and laser applications

As film and mechanical transports improved, the high-speed film camera became available for scientific research. Kodak eventually shifted its film from acetate base to Estar (Kodak's name for a Mylar-equivalent), which enhanced the strength and allowed it to be pulled faster. The Estar was also more stable than acetate for more accurate measurement, and it was not as prone to fire. Each film type is available in many load sizes. These may be cut down and placed in magazines for easier loading. A 1200 foot magazine is typically the lon ...

See also:

High speed photography, High speed photography - Early applications, High speed photography - Stroboscopy and laser applications, High speed photography - High speed film cameras, High speed photography - Pin register, High speed photography - Rotary prism, High speed photography - Rotary mirror, High speed photography - Streak shadowgraph and motion compensation photography, High speed photography - Video, High speed photography - CCD, High speed photography - CMOS, High speed photography - Infrared

Read more here: » High speed photography: Encyclopedia II - High speed photography - High speed film cameras

The ideal op-amp has an infinite open-loop gain (see also gain), infinite bandwidth, infinite input impedances, zero output impedance and zero noise, as well as zero input offset (exactly 0 V out when both inputs are exactly equal) and no thermal drift. In ideal op-amps, the input currents are zero i+ = i- = 0 Modern integrated circuit MOSFET op-amps approximate more and more closely to these ideals in limited-bandwidth, large-signal applica ...

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Operational amplifier, Operational amplifier - History, Operational amplifier - The Ideal Op-Amp, Operational amplifier - Modern op-amps, Operational amplifier - Notation, Operational amplifier - Use in electronics system design, Operational amplifier - DC behavior, Operational amplifier - AC behavior, Operational amplifier - Basic op-amp circuit, Operational amplifier - Op-amp limitations, Operational amplifier - Internal circuitry of 741 type op-amp, Operational amplifier - Current mirrors, Operational amplifier - Differential input stage, Operational amplifier - Class A gain stage, Operational amplifier - Output bias circuitry, Operational amplifier - Output Stage, Operational amplifier - Common applications, Operational amplifier - Other applications

Read more here: » Operational amplifier: Encyclopedia II - Operational amplifier - The Ideal Op-Amp

By removing the prism from the rotary prism cameras, and using a very narrow slit in place of the shutter, it is possible to take images whose exposure is proportional to the film speed across the slit. The image that results has several useful properties. The film advance direction is essentially a measure of time. If the subject's motion is perpendicular to the slit, it may show growth or motion perpendicular to the slit. When the motion of the film is opposite to that of the subject with an inverting (positive) lens, and synchroniz ...

See also:

High speed photography, High speed photography - Early applications, High speed photography - Stroboscopy and laser applications, High speed photography - High speed film cameras, High speed photography - Pin register, High speed photography - Rotary prism, High speed photography - Rotary mirror, High speed photography - Streak shadowgraph and motion compensation photography, High speed photography - Video, High speed photography - CCD, High speed photography - CMOS, High speed photography - Infrared

Read more here: » High speed photography: Encyclopedia II - High speed photography - Streak shadowgraph and motion compensation photography

A typical circuit symbol for an op-amp looks like this: Its terminals are: V+: non-inverting input V−: inverting input Vout: output VS+: positive power supply VS−: negative power supply The power supply pins (VS+ and VS−) can be labeled many different ways. See IC power supply pins. For FET based op-amps, the positive, common drain supply is labeled VDD and the negative, c ...

See also:

Operational amplifier, Operational amplifier - History, Operational amplifier - The Ideal Op-Amp, Operational amplifier - Modern op-amps, Operational amplifier - Notation, Operational amplifier - Use in electronics system design, Operational amplifier - DC behavior, Operational amplifier - AC behavior, Operational amplifier - Basic op-amp circuit, Operational amplifier - Op-amp limitations, Operational amplifier - Internal circuitry of 741 type op-amp, Operational amplifier - Current mirrors, Operational amplifier - Differential input stage, Operational amplifier - Class A gain stage, Operational amplifier - Output bias circuitry, Operational amplifier - Output Stage, Operational amplifier - Common applications, Operational amplifier - Other applications

Read more here: » Operational amplifier: Encyclopedia II - Operational amplifier - Notation

The ability to use the general black box op-amp during circuit design makes complicated circuits much easier to work with and understand, especially in very large circuits. Op-amps can be used as if they had the idealized properties (infinite gain, perfect heat dissipation, flat frequency response, infinite input impedance, zero output impedance, and other perfect responses). After initial circuit design is completed (and sometimes modeled on a computer), specific op-amps are chosen that come as close as possible to meeting the design ...

See also:

Operational amplifier, Operational amplifier - History, Operational amplifier - The Ideal Op-Amp, Operational amplifier - Modern op-amps, Operational amplifier - Notation, Operational amplifier - Use in electronics system design, Operational amplifier - DC behavior, Operational amplifier - AC behavior, Operational amplifier - Basic op-amp circuit, Operational amplifier - Op-amp limitations, Operational amplifier - Internal circuitry of 741 type op-amp, Operational amplifier - Current mirrors, Operational amplifier - Differential input stage, Operational amplifier - Class A gain stage, Operational amplifier - Output bias circuitry, Operational amplifier - Output Stage, Operational amplifier - Common applications, Operational amplifier - Other applications

Read more here: » Operational amplifier: Encyclopedia II - Operational amplifier - Use in electronics system design

The op-amp gain calculated at DC does not apply at higher frequencies. This effect is due to limitations within the op-amp itself, such as its finite bandwidth, and to the AC characteristics of the circuit in which it is placed. The best known stumbling-block in designing with op-amps is the tendency for the device to resonate at high frequencies, where negative feedback changes to positive feedback due to parasitic phase shift. Typical low cost, general purpose op-amps exhibit a gain bandwidth product of a few MHz. Specialty and high ...

See also:

Operational amplifier, Operational amplifier - History, Operational amplifier - The Ideal Op-Amp, Operational amplifier - Modern op-amps, Operational amplifier - Notation, Operational amplifier - Use in electronics system design, Operational amplifier - DC behavior, Operational amplifier - AC behavior, Operational amplifier - Basic op-amp circuit, Operational amplifier - Op-amp limitations, Operational amplifier - Internal circuitry of 741 type op-amp, Operational amplifier - Current mirrors, Operational amplifier - Differential input stage, Operational amplifier - Class A gain stage, Operational amplifier - Output bias circuitry, Operational amplifier - Output Stage, Operational amplifier - Common applications, Operational amplifier - Other applications

Read more here: » Operational amplifier: Encyclopedia II - Operational amplifier - AC behavior

The generic op-amp has two inputs and one output. The output voltage is a multiple of the difference between the two inputs (some are made with floating, differential outputs): Vout = G(V+ − V−) G is the open-loop gain of the op-amp. The inputs are assumed to have very high impedance; negligible current will flow into or out of the inputs. Op-amp outputs have very low source impedance. If the output is connected to the inverting input, after being scaled by a voltage divi ...

See also:

Operational amplifier, Operational amplifier - History, Operational amplifier - The Ideal Op-Amp, Operational amplifier - Modern op-amps, Operational amplifier - Notation, Operational amplifier - Use in electronics system design, Operational amplifier - DC behavior, Operational amplifier - AC behavior, Operational amplifier - Basic op-amp circuit, Operational amplifier - Op-amp limitations, Operational amplifier - Internal circuitry of 741 type op-amp, Operational amplifier - Current mirrors, Operational amplifier - Differential input stage, Operational amplifier - Class A gain stage, Operational amplifier - Output bias circuitry, Operational amplifier - Output Stage, Operational amplifier - Common applications, Operational amplifier - Other applications

Read more here: » Operational amplifier: Encyclopedia II - Operational amplifier - Basic op-amp circuit

Although the design of most op-amp circuits relies on the "golden rules" above, designers should also be aware that no real op-amp can match these characteristics exactly. Listed below are some of the limitations of real op-amps, as well as how this affects circuit design. DC imperfections: Finite gain - the effect is most pronounced when the overall design attempts to achieve gain close to the inherent gain of the op-amp. Finite input resistance - this puts an upper bound on the resistances in the feedback circu ...

See also:

Operational amplifier, Operational amplifier - History, Operational amplifier - The Ideal Op-Amp, Operational amplifier - Modern op-amps, Operational amplifier - Notation, Operational amplifier - Use in electronics system design, Operational amplifier - DC behavior, Operational amplifier - AC behavior, Operational amplifier - Basic op-amp circuit, Operational amplifier - Op-amp limitations, Operational amplifier - Internal circuitry of 741 type op-amp, Operational amplifier - Current mirrors, Operational amplifier - Differential input stage, Operational amplifier - Class A gain stage, Operational amplifier - Output bias circuitry, Operational amplifier - Output Stage, Operational amplifier - Common applications, Operational amplifier - Other applications

Read more here: » Operational amplifier: Encyclopedia II - Operational amplifier - Op-amp limitations

Although it is useful and easy to treat the op-amp as a black box with a perfect input/output characteristic, it is important to understand the inner workings, so that one can deal with problems that may arise due to internal design limitations. Though designs vary between products and manufacturers, all op-amps have basically the same internal structure, which consists of three stages: Differential amplifier Input stage - provides low noise amplification, high input impedance, usually a differential output ...

See also:

Operational amplifier, Operational amplifier - History, Operational amplifier - The Ideal Op-Amp, Operational amplifier - Modern op-amps, Operational amplifier - Notation, Operational amplifier - Use in electronics system design, Operational amplifier - DC behavior, Operational amplifier - AC behavior, Operational amplifier - Basic op-amp circuit, Operational amplifier - Op-amp limitations, Operational amplifier - Internal circuitry of 741 type op-amp, Operational amplifier - Current mirrors, Operational amplifier - Differential input stage, Operational amplifier - Class A gain stage, Operational amplifier - Output bias circuitry, Operational amplifier - Output Stage, Operational amplifier - Common applications, Operational amplifier - Other applications

Read more here: » Operational amplifier: Encyclopedia II - Operational amplifier - Internal circuitry of 741 type op-amp

The op-amp gain calculated at DC does not apply at higher frequencies. This effect is due to limitations within the op-amp itself, such as its finite bandwidth, and to the AC characteristics of the circuit in which it is placed. The best known stumbling-block in designing with op-amps is the tendency for the device to resonate at high frequencies, where negative feedback changes to positive feedback due to parasitic phase shift. Typical low cost, general purpose op-amps exhibit a gain bandwidth product of a few MHz. Specialty and high ...

See also:

Operational amplifier, Operational amplifier - History, Operational amplifier - The Ideal Op-Amp, Operational amplifier - Modern op-amps, Operational amplifier - Notation, Operational amplifier - Use in electronics system design, Operational amplifier - DC behavior, Operational amplifier - AC behaviour, Operational amplifier - Basic op-amp circuit, Operational amplifier - Op-amp limitations, Operational amplifier - Internal circuitry of 741 type op-amp, Operational amplifier - Current mirrors, Operational amplifier - Differential input stage, Operational amplifier - Class A gain stage, Operational amplifier - Output bias circuitry, Operational amplifier - Output Stage, Operational amplifier - Common applications, Operational amplifier - Other applications

Read more here: » Operational amplifier: Encyclopedia II - Operational amplifier - AC behaviour