Brewster's angle


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Brewster's angle

[¦brü·stərz ¦aŋ·gəl]
(optics)
The angle of incidence of light reflected from a dielectric surface at which the reflectivity for light whose electrical vector is in the plane of incidence becomes zero; given by Brewster's law. Also known as polarizing angle.
References in periodicals archive ?
Our Brewster's angle imaging apparatus is photographed in Figure 5.
Temporal alignment was achieved from an estimation of the optical path length of a single-pass reflection of the beam at the first interface at Brewster's angle. Raster waveform data was then used to produce gray scale sample images by first truncating the waveforms to a 25 ps window containing the peak of the reflected pulse, and subsequently extracting the integrated spectral content of the signal in the vicinity of 80 GHz through the use of a discrete Fourier transform.
The "angle of polarization" is Brewster's angle [23, p.
Planck's medium 2 has a Brewster's angle complementary to the Brewster's angle of his medium 1 ([[theta].sub.B] + [[theta]'.sub.B] = 90[degrees]).
for parallel polarization, the reflection coefficient reduces to zero at Brewster's angle [[theta].sub.b] given by (21) or (24).
Figure 15 and Figure 16 show the change in magnitude of reflection coefficient and Brewster's angle with change in dimension.
In this section, we will present numerical examples for four cases of electromagnetic parameters of the uniaxial chiral slab: [[epsilon].sub.t] > 0, [[epsilon].sub.z] > 0; [[epsilon].sub.t] < 0, [[epsilon].sub.z] > 0; [[epsilon].sub.t] > 0, [[epsilon].sub.z] < 0; and [[epsilon].sub.t] < 0, [[epsilon].sub.z] < 0, and discuss the existence of the Brewster's angle for different chiral parameters.
Beyond incident angles of [+ or -]30[degrees], the error rises, reaching 10% at [+ or -]40[degrees] and worsening as Brewster's angle is approached.
In the Senior High School Division, 1st Place ($500 US Savings Bond) went to Mary Woodruff, Omaha South HS, "Measurement of the Index of Refraction Using Brewster's Angle"; 2nd Place -- Alane Stednitz and Cassiopia Ransom, Burke HS, "The Determination of the Upper Age Limit of the Universe"; 3rd Place -- Alike Fricke, Columbus Lakeview HS, "Analysis of Jumping Using Digital 8 Video and NIH Imaging." In the Junior High School Division, the $100 US Savings Bond went to Zack Owens, St.
It is known from optics that there is one particular angle of incidence, referred to as Brewster's angle, which makes total refraction of the parallel-polarized signal to the second medium.
In design A, a sample-filled cuvette is held at Brewster's angle within an optical cell to minimize reflective losses at the air-glass interface.
For parallel polarization case, Brewster's angle can also be formulated.