Scientific measurement requires precision and standardization across disciplines:
- SI units provide a universal measurement language
- Derived units combine base units for complex quantities
- Conversion accuracy is critical for reproducible results
7 SI base units:
- Meter (m) -- length
- Kilogram (kg) -- mass
- Second (s) -- time
- Ampere (A) -- electric current
- Kelvin (K) -- temperature
- Mole (mol) -- amount of substance
- Candela (cd) -- luminous intensity
Defined by the 2019 SI redefinition fixing fundamental constants.
- Precision: consistency of repeated measurements
- Accuracy: closeness to the true value
- Our tools use 15+ digit precision (IEEE 754)
- Significant figures should match your measurement precision
- Always verify critical values against standards
Conversores de Ciencia e Ingeniería
Professional-grade conversion tools built for scientists, engineers, and students. From electromagnetic quantities to thermodynamic properties, our calculators deliver the precision that scientific work demands. All conversion factors are sourced from NIST and BIPM standards.
Calculadoras Científicas
Advanced calculation tools for engineering and scientific analysis.
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Física y Mecánica
Electromagnetismo y Ondas
Ciencias Térmicas y de Fluidos
Constantes Científicas de Referencia
Fundamental physical constants used in scientific calculations.
| Constant | Symbol | Value | Unit |
|---|---|---|---|
| Speed of Light | c | 299,792,458 | m/s |
| Gravitational Constant | G | 6.674 × 10⁻¹¹ | N·m²/kg² |
| Planck Constant | h | 6.626 × 10⁻³⁴ | J·s |
| Boltzmann Constant | k | 1.381 × 10⁻²³ | J/K |
| Avogadro Number | Nₐ | 6.022 × 10²³ | mol⁻¹ |
| Elementary Charge | e | 1.602 × 10⁻¹⁹ | C |
| Gas Constant | R | 8.314 | J/(mol·K) |
| Stefan-Boltzmann Constant | σ | 5.670 × 10⁻⁸ | W/(m²·K⁴) |
Por Qué Importa la Precisión en la Ciencia
In 1999, NASA's Mars Climate Orbiter was lost because one engineering team used imperial units (pound-force seconds) while another used metric units (newton-seconds). This $327.6 million mission failure demonstrates why precise unit conversion is not just academic -- it's critical for real-world outcomes.
In medicine, dosing errors from unit confusion can be life-threatening. A prescription written in milligrams administered as micrograms delivers 1000x the intended dose. Pharmaceutical standards require precise unit notation and conversion.
In physics research, the precision of unit conversion directly affects experimental reproducibility. The 2019 SI redefinition fixed fundamental constants to exact values, establishing a measurement framework that enables scientific collaboration across the globe.
Preguntas Frecuentes sobre Ciencia
Common questions about our science and engineering conversion tools.