Microwaves with grid. Transmitter and receiver are polarized.
6H10.20 • E+45+5
Microwaves with grid. Transmitter and receiver are polarized. The horn of a 3 cm. microwave transmitter is designed to produce polarized microwaves with the electric field in the vertical direction (see Fig.1). The 3 cm. microwave receiver is designed to sense these polarized microwaves, and to emit an audible tone from its speaker. If the receiver is rotated 90 degrees, its reception drops to zero. If a vertical wire grid is placed between the transmitter and receiver (see Fig.2), the microwave vertical electric field is dissipated in the wires, and the reception is blocked. If the wire grid is rotated ninety degrees (horizontal wires), reception becomes maximum.
Related Demos
E+45+61
Shiny object turns black viewed through linear polarizer and quarter wave plate E+45+0
Two picket fence sections with slats and rope to make waves. E+45+10
Malus experiment: Polarization by reflection off glass surface. E+45+15
Polarization of light by internal reflection: Fresnel rhomb. E+45+20
Polarization of light through a pile of glass plates, using arc lamp. E+45+25
Commercial Polaroid filters on an OHP. E+45+30
Plaster models of positive and biaxial crystals. E+45+35
Two tourmaline crystals act as polaroids, using arc lamp. E+45+40
Light through polaroid and calcite, using arc lamp. E+45+45
Model of a calcite crystal. E+45+50
Light through Nicol prism and Nicol analyzer, using arc lamp. E+45+55
Quartz prisms give a single and double spectrum, using arc lamp. E+45+60
Polarized light and stressed lucite on an OHP. E+45+65
Optical rotation of polarized light by sugar solution, using arc lamp. E+45+70
Optical rotation by sugar solution produces barber pole, using arc lamp. E+45+75
Mechanical model to show circular polarization; hand-cranked. E+45+80
Circular polarization with quarter wave plate, using arc lamp. E+45+85
Circular polarization of microwaves by elliptical metal tube. E+45+90
Circular polarization of microwaves: With reflector and grids. E+45+95
Polarized light thru Karo syrup shows dark bands, using arc lamp. E+45+100
10_ retarder plate makes dark bands in spectrum, using arc lamp. E+45+105
Sunset: solution in tank scatters blue light, using arc lamp. E+45+110
Visible nodes and antinodes in linearly birefringent plexiglass rod. E+45+115
Applet: Polarization of Light (3-D Version)