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Experiment topics: ? Straight-line propagation of microwaves ? Reflection, absorption and transmission ? Shielding from microwaves ? Experiments on polarisation ? Experiments on diffraction ? Experiments on refraction and interference ? Transmission of information Equipment set for conducting wave optics experiments involving wavelengths in the cm range.
A transmitter with a horn antenna radiates a narrow beam of linearly polarised electromagnetic waves with a wavelength of about 3 cm. The direction of polarisation can be altered by rotating the antenna around the axis of propagation. To detect the waves, a horn antenna receiver and a microwave sensor are provided. A control unit converts the intensity of the signal received into a proportionally large output voltage that can be measured using a voltmeter. It is also possible to switch on an acoustic signal with a volume that is proportional to the intensity of the signal. Oscillator frequency: 9.4 GHz (U8493600-230) Power of transmitter: 10 ? 25 mW Internal modulator frequency: 3 kHz approx. Acoustic signal: Switchable External modulation: 100 Hz ?20 kHz, 1 V max. Output voltage: 10 V max. Receiver with horn antenna: Silicon diode with resonator Microwave sensor: Silicon diode with resonator Dimensions of basic apparatus: approx. 170x200x75 mm¶ Contents: 1 Control unit 1 Transmitter with horn antenna 1 Receiver with horn antenna 1 Microwave probe 1 Mikrowave bench, 800 mm 1 Microwave bench, 400 mm with plate holder 1 Reflection plate 180x180 mmÇ¶ª 1 Polarisation grating, 180x180 mmÇ¶ª 1 Absorption plate, fibreboard, 180x180 mmÇ¶ª 1 Paraffin prism 1 Stand for prism 1 Plate with double slit 1 Cover plate for double slit