Review of Short Phrases and Links|
This Review contains major "Length"- related terms, short phrases and links grouped together in the form of Encyclopedia article.
- Length is the long dimension of any object.
- Length is the metric of one dimension of space.
- Length is a physical quantity that can be divided as small as you would like, with no practical limit.
- Length is the measure of distances in space.
- In the physical sciences and engineering, the word "length" is typically used synonymously with "distance".
- The relevant parts of Planck's 1899 paper leave some confusion as to how he managed to come up with the units of time, length, mass, temperature etc.
- The original base units of the metric system could be derived from the length of a meridian of the Earth and the weight of a certain volume of pure water.
- Multiply them times an imperial length # units as desired.
- Since R is measured in units of length and neither pi nor theta have associated units, the net result of this computation is measured in units of length.
- For example, the mass of a rat and the mass of a flea may be added, but the mass of a flea and the length of a rat cannot be meaningfully added.
- For example, a measurement of the length of a plank might result in a measurement of 2.53 meters plus or minus 0.01 meter, with a probability of 99%.
- For example, rather than an undifferentiated length unit L, we may have L x represent length in the x direction, and so forth.
- There is a two-dimensional analog of pressure -- the lateral force per unit length applied on a line perpendicular to the force.
- The ratio (length divided by length) is dimensionless.
- There are also physical quantities that can be classified as neither extensive nor intensive, for example angular momentum, area, force, length, and time.
- The dimensions of a physical quantity are associated with mass, length, and time, represented by symbols M, L, and T each raised to rational powers.
- Rotating the zoom ring adjusts the focal length.
- Principle focus : This value is related to the focal length of the lens.
- If the object distance is smaller than the focal length of this lens, the image is virtual, erect, and larger than the object.
- Usually found on the barrel of a lens, f-numbers indicate the size of the aperture in relation to the focal length of the lens.
- A lens with a shorter focal length would cause the angle subtended by the virtual image to increase and thus cause the magnifying power to increase.
- FL - Focusing Lens is a short focal length convex lens.
- When using the unit of " radians " the length that is compared is the length of the radius of the circle.
- The focal length of a spherical mirror is equal to half the radius of curvature.
- In words, this equation says that the force per unit length of wire is the cross product of the current vector and the magnetic field.
- The length of the arrow represents the vector's magnitude, while the direction in which the arrow points represents the vector's direction.
- For polarized light the end of the vector lies on the surface of the sphere, whereas the vector has zero length for unpolarized light.
- Regular hexagon s is the length of one side of the hexagon.
- Regular octagon s is the length of one side of the octagon.
- Regular triangle s is the length of one side of the triangle.
- The magnification is the focal length of the telescope divided by the focal length of the eyepiece.
- Because the index of refraction varies with wavelength, the focal length of a lens also varies and causes longitudinal or axial chromatic aberration.
- For a given scene and subject magnification, the background blur increases with lens focal length.
- But in the case of, say, an 80mm lens, were talking about its focal length.
- On 35mm cameras, full frame fisheyes usually have a focal length of 8mm, and semi-fisheyes have a focal length of 15mm or 16mm.
- By convention a normal lens on a 35mm film camera (and thus a full-frame EOS digital SLR) has a focal length of 50mm or so.
- The coherence length (or coherence time) are unchanged by the pinhole.
- Figure 9: The wave with infinite coherence length from Figure 6 is combined with a spatially shifted copy of itself.
- Thus, a highly coherent source that gives off light with no phase change will produce a long wave train and will be characterized by a long coherence length.
- The coherence length L c is defined as the distance the wave travels in time τ c.
- The Michelson interferometer measures coherence length of light sources directly.
- Rectangle l and w are the lengths of the rectangle's sides (length and width).
- Look up length, width, breadth in Wiktionary, the free dictionary.
- A measure of spatial extent, especially width, height, or length.
- Last check: 2007-10-08) The spatial coherence length is determined by the cavity and cavity reflectivity in a laser.
- Parallelogram (in general) b and h are the length of the base and the length of the perpendicular height, respectively.
- They are the fundamental quantities, which include length, mass and time.
- Thus, Huntley's L x becomes with L specifying the dimension of length, and 1 x specifying the orientation.
- The semi-minor axis of an ellipse (a flattened circle) is half the length of the line segment across the shortest part of the ellipse.
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