Related by context. Frequent words. (Click for all words.) 51 photoelectric 49 controllably 49 photocell 49 helium atoms 49 microwatts 49 halogen bulb 48 nuisance alarms 48 Nerve cells 48 autofocusing 48 pulse width modulation PWM 48 phosphors 47 UV lamp 47 voltage spikes 47 beam splitter 47 coolant temperature 47 woodburner 47 excitation 46 dimmer switches 46 rheostat 46 Fluorescent lights 46 paramagnetic 46 electrochemical reaction 46 crystal oscillator 46 ultraviolet wavelengths 46 rubidium atoms 46 pulse generator 46 millivolts 46 inhibitory neurons 46 ionization 46 output voltage 46 ionize 45 twin turbos 45 gearshifts 45 detector 45 thumbwheel 45 circuitry 45 voltmeter 45 pulsed laser 45 Compact fluorescent bulbs 45 electrical pulses 45 detectors 45 electromagnetically 45 airflows 45 laser pulse 45 Gamma rays 45 #rpm [001] 45 #Hz [002] 45 Fire extinguishers 45 shorter wavelengths 45 backlighted 45 combustion gases 45 smoker inhales 45 shutoff valves 44 oxidise 44 photodiode 44 μs 44 infrared beam 44 resonant frequency 44 picosecond 44 #mV [002] 44 photodetector 44 light transmittance 44 collimated 44 mute buttons 44 magnetic pulses 44 electrical conduction 44 brushless motor 44 sodium ions 44 impedances 44 milliwatt 44 electron beams 44 reverse polarity 44 photocatalyst 44 tachometers 44 thermal dissipation 44 potassium ions 43 sensory nerves 43 oscillatory 43 Smoke alarms 43 Gamma ray bursts 43 setpoint 43 spray nozzle 43 analog circuitry 43 electromagnetic pulses 43 halogen headlights 43 sensor arrays 43 florescent light 43 dispersive 43 audible alarms 43 cesium atoms 43 amperage 43 Install programmable thermostat 43 LED lamp 43 stoichiometric 43 fluorescent tube 43 combustible gases 43 plasmon 43 filament 43 baud rate 43 combusts 43 digital readout