RMS
AC voltage measure
RMS stands for root mean square, a statistical measure calculated by squaring values, averaging them, and taking the square root.
It's essential in electrical engineering for measuring alternating current: The outlet delivers 120 volts RMS.
RMS captures the effective magnitude of fluctuating quantities, making it more useful than simple averages for signals that swing positive and negative.
Underground absorbing structure
- meanAverage, or spiteful
- squareRhombus with right angles
- magnitudeSize or scale
- vectorQuantity with direction
Pythagorean · complex numbers · absolute value · function · integral · geometry · algebra · calculation
Spread around the mean
- varianceSpread around the mean
- variabilityTendency to change
- fluctuationsIrregular rises and falls
- signal processingMathematical manipulation of waveforms
time series · deviation · dispersion · averaging · regression · normalization · residuals · outliers
Electrical potential difference
- currentDirected flow of charge
- powerEnergy transfer rate
- amplitudeMaximum oscillation displacement
- alternating currentPeriodically reversing electrical flow
waveform · sine wave · multimeter · AC voltage · impedance · ohms · circuit · load
Acoustic intensity units
- loudnessPerceived sound intensity
- amplitudeMaximum oscillation displacement
- waveformGraphed oscillation pattern
- distortionTwisting from original state
audio engineering · mixing · mastering · dynamic range · clipping · compression · metering · gain
root
Underground absorbing structure
vector · Pythagorean · complex numbers · absolute value · function · integral · geometry · algebra · calculation · formula
standard deviation
Spread around the mean
- varianceSpread around the mean
- variabilityTendency to change
- fluctuationsIrregular rises and falls
signal processing · time series · deviation · dispersion · averaging · regression · normalization · residuals · outliers · distribution
voltage
Electrical potential difference
alternating current · waveform · sine wave · multimeter · AC voltage · impedance · ohms · circuit · load · transformer
decibels
Acoustic intensity units
- loudnessPerceived sound intensity
- amplitudeMaximum oscillation displacement
- waveformGraphed oscillation pattern
distortion · audio engineering · mixing · mastering · dynamic range · clipping · compression · metering · gain · monitoring
- audio termsWAV, dB, tone, frequency response, MP3
- AC CircuitsAC power, AC voltage, AC generator, impedance, reactance
- audio dynamicsdynamic range, compressor, limiter, expander, loudness
- Ship PrefixesHMS, USS, MV, USNS, INS
- acousticssound waves, sound wave, sound, soundwave, vibration
- electrical gridpower grid, power grids, electrical grid, power line, power lines
- RMS TitanicFamously sunk ocean liner
- RMS LusitaniaTorpedoed ocean liner, 1915