Geophysical Seismology Epicenter Distance & Ground Acceleration
Cross-reference seismic event force indicators, identify epicentral layout margins, process surface acceleration variables, and model wave movement speeds.
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ND Filter Stops Converter
Convert ND filter labels (ND density, optical density, and stop reduction) and calculate long exposure shutter speed compensation.
Facet angle ↔ critical angle — refractive index based
Calculate gemstone critical angles and recommended pavilion/crown alignments to maximize light reflection.
Feed conversion ratio — feed weight ↔ fish weight gain
Determine feed efficiency (FCR), specific growth rate, and economic cost per kg of fish biomass gain.
Tolerance converter (ISO fit classes ↔ clearance)
Find upper and lower deviation limits for shaft and hole ISO 286 fit classes like H7, g6, f7, and compute clearances in microns or mm.
Gray ↔ rad (Absorbed Dose)
Convert between Gray (Gy), rad, milligray (mGy), and microrad (µrad) to analyze absorbed ionizing radiation energy per unit mass.
SEISMOLOGY Utilities
Choose a specialized option to begin instant real-time conversion.
Richter ↔ Mercalli intensity — magnitude vs felt shaking
Compare Instrumental Richter Magnitude with Modified Mercalli felt intensity descriptors.
P wave speed ↔ S wave speed → epicenter distance
Predict distance to earthquake epicenter from P and S seismic wave arrival time differences.
Ground acceleration — Gal ↔ g ↔ m/s²
Convert Peak Ground Acceleration (PGA) values among Gal, gravity fractions, and m/s².
Tsunami wave speed — ocean depth ↔ km/h
Predict shallow water tsunami wave propagation speed from ocean depth parameters.
Fault slip rate — mm per year ↔ recurrence interval
Determine earthquake return recurrence intervals based on tectonics fault slip rates.