Atmosfera Padrão
Embed This Widget
Add the script tag and a data attribute to embed this widget.
Embed via iframe for maximum compatibility.
<iframe src="https://unitfyi.com/iframe/glossary/atmosphere-pressure-def/" width="420" height="400" frameborder="0" style="border:0;border-radius:10px;max-width:100%" loading="lazy"></iframe>
Paste this URL in WordPress, Medium, or any oEmbed-compatible platform.
https://unitfyi.com/glossary/atmosphere-pressure-def/
Add a dynamic SVG badge to your README or docs.
[](https://unitfyi.com/glossary/atmosphere-pressure-def/)
Use the native HTML custom element.
Definição
Unidade de referência de pressão definida como exatamente 101.325 pascals (101,325 kPa), representando a pressão atmosférica média aproximada ao nível do mar.
Explicação
Standard atmosphere (atm) is used to define other pressure units: 1 atm = 760 mmHg = 14.696 psi = 1.01325 bar. A typical car tire is inflated to 2.2–2.5 atm gauge pressure (above atmospheric). Deep-sea submersibles must withstand more than 1,000 atm at 10 km depth. The standard atmosphere is also the upper boundary of ‘Standard Conditions’ in gas law calculations.
RELATED ARTICLES
A complete guide to the four temperature scales in scientific and everyday use—Celsius, Fahrenheit, Kelvin, and Rankine—including their history, conversion formulas, and where they intersect.
Speed Units Guide: MPH, KM/H, Knots, and MachA complete reference for speed units used around the world — from everyday driving speeds to the velocity of light.
Energy Units Guide: Joules, Calories, BTU, and Kilowatt-HoursA complete reference for energy units across physics, food science, electrical engineering, and fuel — with key conversions and real-world examples.
RELATED TERMS
Zero Absoluto
A menor temperatura possível: 0 K, -273,15 °C ou -459,67 °F.
Caloria
Unidade de energia; a caloria pequena (cal) eleva 1 g de água em 1 °C, enquanto a Caloria alimentar (kcal) equivale a 1000 calorias pequenas.
Número de Mach
A razão entre a velocidade de um objeto e a velocidade do som no meio ao redor.
Ano-Luz
A distância que a luz percorre em um ano no vácuo: aproximadamente 9,461 trilhões de quilômetros.
Elétron-Volt
Unidade de energia igual à energia cinética adquirida por um elétron acelerado através de uma diferença de potencial de 1 volt.