Category: Science
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PSLE Science Reality Lab Vol No.412 | “Calibration Due: 30 September” — Is the Instrument Guaranteed Accurate Until That Date?
A massive Primary 5/6 evidence guide to calibration due dates: why a recalibration schedule is a measurement-assurance control point, not a guarantee of accuracy until midnight.
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PSLE Science Reality Lab Vol No.411 | “Dehumidifier Capacity = 20 L/day” — Will It Remove 20 Litres From the Room Every Day?
A massive Primary 5/6 evidence guide to dehumidifier capacity ratings: why litres per day is a test-condition performance measure, not a guaranteed amount removed from every room.
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PSLE Science Reality Lab Vol No.410 | “Microwave Oven = 1000 W” — Does It Draw Exactly 1000 W From the Wall?
A massive Primary 5/6 evidence guide to microwave-oven wattage: why rated cooking output power is not automatically the same quantity as electrical input or standby power.
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PSLE Science Reality Lab Vol No.409 | “12-Bit Satellite Data = 4096 Levels” — Is It 16 Times More Accurate Than 8-Bit Data?
A massive Primary 5/6 evidence guide to radiometric bit depth: why 12-bit data provide 4096 possible digital levels without automatically making measurements 16 times more accurate than 8-bit data.
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PSLE Science Reality Lab Vol No.408 | “Echo Sounder Says 20 m” — Is the Seabed Exactly 20 m Below the Water Surface?
A massive Primary 5/6 evidence guide to echo-sounder depth: why a raw sonar display may require transducer-draft, sound-speed, vessel-motion and datum corrections before becoming final water depth.
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PSLE Science Reality Lab Vol No.407 | “NIST Traceable” — Did NIST Test, Approve or Certify This Instrument?
A massive Primary 5/6 evidence guide to NIST traceability: why a traceability chain supports measurement provenance without meaning NIST tested, approved or guarantees the product.
