Measurement
By Levi Clancy for Student Reader on
updated
- Laboratory Methods
- Acids and Bases
- Antibody techniques
- Caenorhabditis elegans
- Cell Culture
- Chemical Kinetics
- Common Laboratory Microbes
- Competition Assay
- Drosophila melanogaster
- Experimental Design by the Scientific Method
- Focus Assay
- Genetic techniques
- Measurement
- Models & Representations
- Mouse Models
- Pathology techniques
- Protein analysis
- Visual Assays
Units of Mass
| Atomic Mass Unit | 1 u = 1.6605 × 10-27 |
|---|---|
| Mole (mol) | One mole is defined as the amount of substance that contains exactly as many atoms or molecules as are in precisely 12 grams of 12C. units in moles = mass ( grams ) / molecular mass ( g mol-1 ) |
Units of Temperature
| Celsius/Centigrade (C) | Absolute zero: -273.15°C T°C = 5⁄9 ( T°F - 32 ) |
|---|---|
| Fahrenheit (F) | Absolute zero: -459.67°F T°F = 9⁄5 T°C + 32 |
| Kelvin (K) | Kelvin and Centigrade have equal increments. The difference between Kelvin and Centigrade is that 0°K is absolute zero (-273.15°C) and 0°C is the freezing point of water (273.15°K). Thus, ΔT in °K and °C will be equal, even though T°F ≠ T°C. Absolute zero: 0°K |
Units of Pressure
| Pascals (Pa) | N/m2 | 1 Pascal = 7.50247 · 10-3 mm-Hg 1 Pascal = 9.86923 · 10-6 atm 1 Pascal = 10-5 Bar 1 Pascal = 1.45037738 · 10-4 PSI |
|---|---|---|
| Torr | mm-Hg | 1 Torr = 133.289437 Pascal |
| Atm | 1 atm = 1.01325 · 105 Pascal 1 atm = 760.0 mm-Hg | |
| Bar | 1 Bar = 105 Pascal | |
| PSI | lbs in-2 | 1 PSI = 6894.75729 Pascal |
Units of Heat and Energy
| Joule (J) | |
|---|---|
| calorie (cal) | 1 calorie = 4.186 J |
| Calorie (Cal) | 1 Calorie = 4.186 kJ = 1000 cal = 1 kcal = 4186 J |