Fotric 320F Series, User Manual

Page: 115 / 123

111
Vocabulary
Absolute zero
Absolute zero refers to the temperature of -273.15°C (0 Kelvin = -459.69°F).
Absolute zero is an ideal state, in which all material’s atomic movement
completely stopped. At this temperature, objects have no thermal energy.
Kelvin [K]
Kelvin is a general temperature unit; an Object of 0 K temperature reaches
absolute zero (-273.15°C).
273.15 K = 0
℃
= 32
℉。
K =
℃
+ 273.15
。
Celsius [
℃
]
Celsius is a temperature unit that is widely accepted globally. Under standard
atmospheric pressure, water’s boiling temperature is defined 100
℃
, and its
melting point is defined 0
℃
.
℃
= (
℉
-32)/1.8 or
℃
= K–273.15
Fahrenheit [
℉
]
Fahrenheit is a temperature unit that is widely accepted in North America.
℉
= (
℃
x 1.8) + 32.
Infrared radiation
Infrared radiation is a form of electromagnetic radiation. Any object with a
temperature above absolute zero emits infrared radiation
Absorptivity
Any object can absorb infrared radiation, and the direct result of infrared
absorption is temperature rise. Objects with a higher temperature usually emit