Category: Science
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PSLE Science Reality Lab Vol No.296 | “9H Pencil Hardness” — Is This Coating as Hard as Mohs 9?
A massive Primary 5/6 PSLE Science Reality Lab guide on 9H pencil-hardness claims: how a coating test differs from Mohs mineral hardness and from a universal scratchproof promise.
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PSLE Science Reality Lab Vol No.295 | “Sensor Sensitivity = 20 mV/°C” — Is the Sensor 20% Accurate?
A massive Primary 5/6 PSLE Science Reality Lab guide on reading sensor sensitivity correctly: why mV/°C describes how output changes with the measured quantity, not a percentage accuracy claim.
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PSLE Science Reality Lab Vol No.294 | “First Image of a Black Hole” — Was This One Ordinary Camera Photograph?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on the Event Horizon Telescope: how real radio measurements become a reconstructed black-hole image without being an ordinary single-camera photograph.
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PSLE Science Reality Lab Vol No.293 | “UPF 50” — Does the Fabric Block Only 50% of UV?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on reading UPF 50 clothing labels as protection factors rather than percentages, while checking test conditions and coverage.
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PSLE Science Reality Lab Vol No.292 | “100 W Equivalent” — Does This LED Use 100 Watts?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on reading “100 W equivalent” LED packaging without confusing brightness equivalence, lumens and actual electrical power.
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PSLE Science Reality Lab Vol No.291 | “Listen to the Black Hole” — Did a Microphone Record This Sound in Space?
A massive PSLE Science Reality Lab guide for Primary 5/6 learners on data sonification: how to separate measured scientific data, mapping rules and generated audio without mistaking a representation for a microphone recording.
