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Hace 2 días · The cosmic microwave background ( CMB or CMBR) is microwave radiation that fills all space in the observable universe. It is a remnant that provides an important source of data on the primordial universe. [1] With a standard optical telescope, the background space between stars and galaxies is almost completely dark.
Hace 3 días · In lamp- pumped solid-state lasers, elliptical cylinder-shaped reflectors have been used to direct light from the pump lamp (coaxial with one ellipse focal axis) to the active medium rod (coaxial with the second focal axis).
Hace 2 días · Principal Axis of Lens ( class - 10 , Chapter - Light , W.B.Board )
Hace 1 día · Conversely, light that originates from a point source at the focus is reflected into a parallel ("collimated") beam, leaving the parabola parallel to the axis of symmetry. The same effects occur with sound and other waves. This reflective property is the basis of many practical uses of parabolas.
Hace 1 día · How can I set the x limits (x min and x max) values on a categorical scale? I want to limit the space in the image below to be almost no white space.
Hace 2 días · This range spans from the extreme ultraviolet, through the ultraviolet, visible and into the infra-red. The vertical axis on the graph gives the amount of radiation received from the Sun above the Earth's atmosphere and so is not affected by the varying transmission of the atmosphere.
Hace 5 días · A horizontal parallel beam of light passes through a vertical convex lens of focal. length $20 \mathrm {cm}$ and is then reflected by a tilted plane mirror so that it coverages to a point I. The distance PI is $10 \mathrm {cm}$. $\mathrm {M}$ is a point at which the axis of the lens intersects the mirror.
