fresnel zone plate

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Characteristics of Phase-Correcting Fresnel Zone Plates and Elliptical Waveguides from $139.70	Fresnel Zones in Wireless Links, Zone Plate Lenses and Antennas from $160.00
Basic Principles of Fresnel Antenna Arrays (Lecture Notes in Electrical Engineering, 19) from $91.34	Leviton ODS10-IDE Decora 120/277V Wall Switch Occupancy Sensor, Black from $49.08
ELEGRP Occupancy Motion Sensor Light Switch, PIR Infrared Motion Activated Wall Switch, No Neutral Wire, Single Pole for CFL/LED/Incandescent Bulb, Wall Plate Included, UL Listed (6 Pack, Matte Black) from $72.99	TOPGREENER in Wall PIR Motion Sensor Light Switch, Occupancy Sensor Switch, On/Off Override, Single-Pole, Fluorescent 500VA/Motor 1/8Hp/Incandescent 500W, Neutral Wire Required, TSOS5-White $15.89 from $12.60
$Diffractional Optics of Millimetre Waves$ Diffractional Optics of Millimetre Waves from $82.67	$Waves in Focal Regions: Propagation, Diffraction and Focusing of Light, Sound and Water Waves (Series in Optics and Optoelectronics)$ Waves in Focal Regions: Propagation, Diffraction and Focusing of Light, Sound and Water Waves (Series in Optics and Optoelectronics) $511.70 from $445.00
FUNDAMENTALS OF OPTICS from $12.00	Computer Holography: Acceleration Algorithms and Hardware Implementations from $65.40