A true one-way mirror that actually allows light to be transmitted in one direction only without requiring external energy is not possible as it violates the second law of thermodynamics: if one placed a cold object on the transmitting side and a hot one on the blocked side, radiant energy would be transferred from the cold to the hot object.

The distance and direction information from the sensors is then transmitted to the computer, and the computer moves the graphical pointer on the screen by following the movements of the mouse.

One serious limitation with this type of solution is that the broadcast is sent out in all directions, so the amount of energy in the direction being examined is a small part of that transmitted.

* Optic axis of a crystal, the direction in which a ray of transmitted light suffers no birefringence

The dipoles that produce the transmitted ( refracted ) light oscillate in the polarization direction of that light.

Light polarized along the direction of the magnetic field perpendicular to the line of sight is transmitted, while light polarized in the plane defined by the rotating grain is blocked.

In telecommunication, a four-wire circuit is a two-way circuit using two paths so arranged that the respective signals are transmitted in one direction only by one path and in the other direction by the other path.

# Ratio of signal strength transmitted in a forward direction to that transmitted in a backward direction.

* In 1874, the quadruplex telegraph developed by Thomas Edison transmitted two messages in each direction simultaneously, for a total of four messages transiting the same wire at the same time.

In simplex transmission, signals are transmitted in only one direction ; one station is a transmitter and the other is the receiver.

Penile subincision may leave a man with an increased risk of sexually transmitted diseases, issues with fertility ( due to lack of control over what direction the sperm goes after ejaculation ), and will require a man to sit down while urinating.

To quantify the ease with which a particular medium conducts, engineers employ the thermal conductivity, also known as the conductivity constant or conduction coefficient, k. In thermal conductivity k is defined as " the quantity of heat, Q, transmitted in time ( t ) through a thickness ( L ), in a direction normal to a surface of area ( A ), due to a temperature difference ( ΔT ) [...].

During active ionospheric research, the signal generated by the transmitter system is delivered to the antenna array and transmitted in an upward direction.

After every 8 data bits in one direction, an " acknowledge " bit is transmitted in the other direction.

Due to the direct connection between excitable cells in the form of gap junctions, an action potential can be transmitted directly from one cell to the next in either direction.

The gain of an antenna is a passive phenomenon-power is not added by the antenna, but simply redistributed to provide more radiated power in a certain direction than would be transmitted by an isotropic antenna.

In the forward direction, radio signals are transmitted by base stations ( BTS's ).

For the reverse direction, radio signals are transmitted by the mobile.

Tachometer signals can be used to synchronize several tape machines together, but only if in addition to the tach signal, a directional signal is transmitted, to tell slave machines in which direction the master is moving.

The electron beam is accelerated by an anode typically at + 100 keV ( 40 to 400 keV ) with respect to the cathode, focused by electrostatic and electromagnetic lenses, and transmitted through the specimen that is in part transparent to electrons and in part scatters them out of the beam.

In optical systems, beam steering may be accomplished by changing the refractive index of the medium through which the beam is transmitted or by the use of mirrors, prisms, lenses, or rotating diffraction gratings.

The transmitted beam is phase modulated with the electric signal applied to the crystal.

is the total power transmitted by the beam.

In the above argument we assumed that the surface totally absorbed the beam, in general light can be transmitted, reflected and / or absorbed.

In 1959, William Oldendorf, a UCLA neurologist and senior medical investigator at the West Los Angeles Veterans Administration hospital, conceived an idea for " scanning a head through a transmitted beam of X-rays, and being able to reconstruct the radiodensity patterns of a plane through the head " after watching an automated apparatus built to reject frostbitten fruit by detecting dehydrated portions.

The modulation of the transmitted light beam was done by a mirror made to vibrate by a person's voice: the thin mirror would alternate between concave and convex forms, thus focusing or dispersing the light from the light source.

From Athens, this signal was transmitted by satellite to Canada, where it was received and used to trigger a laser beam to re-light the flame.

The diffracted reference beam and the transmitted test wave interfere to form fringes.

Similarly, energy radiating from the " focus " to the dish can be transmitted outward in a beam that is parallel to the axis of the dish.

To within a constant multiplicative phase factor, the amplitude of the mth transmitted beam can be written as:

Transmission electron microscopy ( TEM ) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it passes through.

The transmitted beam contains information about electron density, phase and periodicity ; this beam is used to form an image.

The frequency of the transmitted beam is affected by the movement of blood in the vessel and by comparing the frequency of the upstream beam versus downstream the flow of blood through the vessel can be measured.

Radio signals are transmitted in a tight beam aimed at the tropopause, midway between the transmitter and receiver sites ; as the signals pass through the troposphere they are scattered, allowing the receiver station to pick up the signal.

The transmitted intensity can be related to the concentration of the species present by the Beer-Lambert law, which states that when a radiation of wavenumber passes through an absorbing medium, the intensity variation along the path of the beam is given by,

The photophone allowed for the transmission of sound on a beam of light, and on June 3, 1880 Bell and Tainter transmitted the world's first wireless telephone message on their newly invented form of telecommunication.

Some of this fluorescent light passes through a second filter or monochromator and reaches a detector, which is usually placed at 90 ° to the incident light beam to minimize the risk of transmitted or reflected incident light reaching the detector.

Nevertheless, neither Tihanyi nor Farnsworth considered the use of a semitransparent plate, and they never transmitted clear images with the devices described in their patents, because they were not aware that the beam alignment had to be perpendicular to the plate in order to produce a well focused image.

In Fig 2, a source S emits light that hits a beam splitter ( in this case, a half-silvered mirror ), surface M, at point C. M is partially reflective, so one beam is transmitted through to point B while the other is reflected in the direction of A.

Wound-tumor virus is a leafhopper transmitted virus not easily transmissible by mechanical inoculation ( Black, 1944 ; ;

This vibrates and sound is transmitted through a single bone, the stapes, to the inner ear.

After an appeal is heard, the " mandate " is a formal notice of a decision by a court of appeal ; this notice is transmitted to the trial court and, when filed by the clerk of the trial court, constitutes the final judgment on the case, unless the appeal court has directed further proceedings in the trial court.

The digital data collected by the telescope is then transmitted and displayed to the user by means of the Internet.

As the signal is copied and re-copied, or transmitted over long distances, these apparently random variations become dominant.

If the weight is suspended off the seabed it acts as a spring or shock absorber to dampen the sudden actions that are normally transmitted to the anchor and can cause it to dislodge and drag.

# It is also used to signify that " grace is transmitted from the Apostles by each generation of bishops through the imposition of hands ".

Jay comments that this is sometimes seen as an early reference to the idea of the transmission of grace through the apostolic succession which in later centuries was understood as being specifically transmitted through the laying on of hands by a bishop within the apostolic succession ( the " pipeline theory ").

For the adherents of this understanding of apostolic succession grace is transmitted during episcopal consecrations ( the ordination of bishops ) by the laying on of hands of bishops previously consecrated within the apostolic succession.

Analog ( or analogue ) television is the analog transmission that involves the broadcasting of encoded analog audio and analog video signal: one in which the information to be transmitted, the brightness and colors of the points in the image and the sound waves of the audio signal are represented by continuous variations of some aspect of the signal ; its amplitude, frequency or phase.

When analog television was developed, no affordable technology for storing any video signals existed ; the luminance signal has to be generated and transmitted at the same time at which it is displayed on the CRT.

A channel actually consists of two signals: the picture information is transmitted using amplitude modulation on one frequency, and the sound is transmitted with frequency modulation at a frequency at a fixed offset ( typically 4. 5 to 6 MHz ) from the picture signal.

Each line of the displayed image is transmitted using a signal as shown above.

The front porch is a brief ( about 1. 5 microsecond ) period inserted between the end of each transmitted line of picture and the leading edge of the next line sync pulse.

OROV is a disease that is transmitted between humans by the biting midge ( Culicoides paraensis ).

In telecommunications, asynchronous communication is transmission of data without the use of an external clock signal, where data can be transmitted intermittently rather than in a steady stream .< ref >

If the pencil with the angle u2 is that of the maximum aberration of all the pencils transmitted, then in a plane perpendicular to the axis at O ' 1 there is a circular disk of confusion of radius O ' 1R, and in a parallel plane at O ' 2 another one of radius O ' 2R2 ; between these two is situated the disk of least confusion.