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這篇文章是關於溫度、溫度計、校準以及熱容量的介紹。它首先解釋了溫度的定義,並列出了不同類型的溫度計,包括紅外線溫度計、電阻溫度計和玻璃中的汞溫度計。接著詳細說明了溫度計的校準步驟,包括冰點校準和沸點校準。最後講解了熱容量的概念,包括熱容量(C)和比熱容量(c)的定義及計算公式。文章內容清晰,適合學習溫度和熱物理相關知識的人閱讀。

# Definition of Temperature

Temperature is a measure of degree of hotness of an object. (Oxford TB 2nd edition, 2014)

# Thermometer

# Type of Thermometers

  • Infrared thermometer
  • Resistance thermometer
  • Mercury-in-glass thermometer

# Thermometer Calibration

Thermometer calibration ensures accurate temperature measurement. It involves adjusting a thermometer to match a known standard.

# Steps for Calibration:

  1. Ice Point Calibration (0°C)

    • Place the thermometer in a mixture of crushed ice and water.
    • Wait for it to stabilize, then adjust if needed to read 0°C.
  2. Boiling Point Calibration (100°C)

    • Place the thermometer in boiling water (at sea level).
    • Ensure it reads 100°C; adjust if necessary.
  3. Using a Reference Thermometer

    • Compare readings with a calibrated standard thermometer at different temperatures.
  4. Adjust and Record

    • If there is a deviation, apply a correction factor.
    • Document the calibration results for future reference.

# Heat Capacity

# Heat Capacity (C)

Q=CΔTQ = C \Delta T

where

  • QQ = Heat Energy (Unit: JJ)
  • CC = Heat Capacity (Unit: JK1J K⁻¹ / J°C1J °C⁻¹)

# Specific Heat Capacity (c)

Q=mcΔTQ = mc \Delta T

where

  • QQ = Heat Energy (Unit: JJ)
  • cc = Specific Heat Capacity (Unit: Jkg1J kg⁻¹ K1K⁻¹ / Jkg1J kg⁻¹ °C1°C⁻¹)

The letter 'c' in specific heat capacity MUST ALWAYS BE LOWERCASE!

  • mm = mass of an object (unit: kg)
  • ΔTΔT = change in temperature (unit: °C)
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