Difference between revisions of "Calibrate"
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===Meaning=== | ===Meaning=== | ||
| − | '''Calibrating''' is when a [[scientist]] checks an [[ | + | '''Calibrating''' is when a [[scientist]] checks an [[Measuring Instrument|instrument]] against a known value to see that it [[Reading|reads]] the correct value. |
===About Calibration=== | ===About Calibration=== | ||
| − | : '''Calibration''' is used to correct for a [[Zero Error|zero error]] in which an [[ | + | : '''Calibration''' is used to correct for a [[Zero Error|zero error]] in which an [[Measuring Instrument|instrument]] [[reading|read]]s the wrong number. |
===Examples=== | ===Examples=== | ||
: To check a [[thermometer]] is [[calibrate]]d a [[scientist]] could place it in [[boiling]] [[water]] to check that it [[reading|reads]] 100°C and in [[freezing]] [[water]] to check that it [[reading|reads]] 0°C. | : To check a [[thermometer]] is [[calibrate]]d a [[scientist]] could place it in [[boiling]] [[water]] to check that it [[reading|reads]] 100°C and in [[freezing]] [[water]] to check that it [[reading|reads]] 0°C. | ||
: To check an [[Analogue Ammeter|analogue ammeter]] is [[calibrate]]d the dial can be [[reading|read]] before a [[Electrical Current|current]] is passed through it to see that it says zero. | : To check an [[Analogue Ammeter|analogue ammeter]] is [[calibrate]]d the dial can be [[reading|read]] before a [[Electrical Current|current]] is passed through it to see that it says zero. | ||
Revision as of 12:38, 21 March 2019
Key Stage 4
Meaning
Calibrating is when a scientist checks an instrument against a known value to see that it reads the correct value.
About Calibration
- Calibration is used to correct for a zero error in which an instrument reads the wrong number.
Examples
- To check a thermometer is calibrated a scientist could place it in boiling water to check that it reads 100°C and in freezing water to check that it reads 0°C.
- To check an analogue ammeter is calibrated the dial can be read before a current is passed through it to see that it says zero.