Optics & Vision Lab
Analyze lens focal lengths, convert clinical visual acuity fractions, compute prism deviations, simulate color temperatures, and evaluate light bulb efficacy.
Prism Power & Deviation Angle
Convert ophthalmic prism diopters (PD) to mechanical degrees of light deviation, and compute exact ray deflection angles.
3.29° (for thin lens model)
Ophthalmic strabismus application:
Prism lenses deflect the incoming optical field toward the base of the prism. This aligns uncoordinated double-vision (diplopia) and redirects light paths directly to the fovea of misaligned eyes.
Explore Additional Utilities
Feed conversion ratio — feed weight ↔ fish weight gain
Determine feed efficiency (FCR), specific growth rate, and economic cost per kg of fish biomass gain.
Block count — wall area ↔ number of blocks needed
Calculate standard concrete masonry units (CMU) or clay bricks required for a wall, adjusting for joint widths and waste factors.
NATO Phonetic Alphabet
Spell out commands or names phonetically using the standard military/aviation phonetic alphabet.
Paper Size Comparer
Convert standard paper formats (A4, Letter, Legal, A3) in mm/inches and visually compare overlap.
Morse Code Translator
Translate standard text to Morse code signals (dots and dashes) and decode them in real-time.
Duration Converter
Convert time intervals seamlessly between weeks, days, hours, minutes, and seconds.
Clinical Blood Pressure Gauges
Compare clinical medical blood pressure or vacuum values between mmHg and kPa units.
Currency Converter
Convert global currencies using simulated or fetched live rates (USD, EUR, GBP, JPY, etc.).
Julian ↔ Gregorian Calendar
Convert between Julian Dates (JD, MJD) and standard Gregorian calendar dates with day of the year and century metrics.
Arena size — competition level ↔ minimum dimensions
Determine dressage, show jumping, and other arena standard dimensions and layouts by competition level.
Hebrew ↔ Gregorian Calendar
Convert between the Hebrew lunisolar calendar and standard Gregorian dates, detailing standard Jewish months, holidays, and leap years.
Map scale — representative fraction ↔ bar scale
Convert map scale representative fractions (e.g., 1:24,000) to paper sizes, real-world distances, and graphical bar scales.
Sheet basis weight — gsm ↔ finished sheet thickness
Convert sheet basis weight to finished sheet caliper thickness based on structural pulp densities.
Steel bar weight — cross section ↔ length ↔ kg
Calculate steel bar weights for square, round, or flat profiles based on thickness and length.
Industrial & Tire Pressure Gauges
Convert heavy industrial or automotive pressure indicators across PSI, bar, kPa, and atm indexes.
Adhesive ratio — PVA ↔ paste ↔ water formulation
Formulate custom bookbinding adhesive mixtures (polyvinyl acetate and wheat starch paste) for perfect open time and flexibility.
Exposure Value (EV) & Lux Converter
Convert between EV and various shutter speed, aperture, and ISO combinations, with equivalent scene lux and EV100 references.
Pulp consistency — dry fiber % ↔ water ratio
Calculate dry fiber weight percentage in wet pulp slurry and water mixing dilution ratios for vat dipping.
Cadence ↔ speed — gear ratio + RPM → km/h
Determine speed based on cadence (RPM), chainring/cog teeth counts, and tire circumference.
Cooling & HVAC Power (BTU/h ↔ W)
Compare heating, cooling, and air conditioning power capacities with corresponding watt ratings.