Author: eduKate Asia
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PSLE Science Reality Lab Vol No.342 | “NRR 30 dB” — Will Earplugs Always Make the Sound 30 dB Quieter?
PSLE Science Reality Lab: learn why a hearing protector marked NRR 30 dB carries a laboratory-derived noise-reduction rating rather than a promise that every wearer receives exactly 30 dB of attenuation.
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PSLE Science Reality Lab Vol No.341 | “Water Resistant 10 Bar” — Does That Mean the Watch Is Safe for Any Activity at 100 m?
PSLE Science Reality Lab: learn why a 10 bar watch water-resistance marking is a defined product-test and use claim, not a universal promise for every activity at an imagined 100 m depth.
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PSLE Science Reality Lab Vol No.340 | “Battery Charge Rate = 1C” — Does That Mean Exactly One Hour to Full Charge?
PSLE Science Reality Lab: learn how to read a battery C-rate as current normalised to rated capacity rather than a guaranteed wall-clock charging time, and why charge curves, limits and temperature matter.
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PSLE Science Reality Lab Vol No.339 | “48 MP Camera” — Does It Capture Four Times More Real Detail Than a 12 MP Camera?
PSLE Science Reality Lab: learn why a 48-megapixel camera has four times the pixel count of a 12-megapixel output but does not automatically capture four times more real scene detail or four times better images.
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PSLE Science Reality Lab Vol No.338 | “ISO/IEC 17025 Accredited Laboratory” — Is Every Test the Lab Performs Accredited?
PSLE Science Reality Lab: learn why ISO/IEC 17025 laboratory accreditation applies to defined scopes of testing and calibration, and why an accreditation logo does not make every activity accredited or every result infallible.
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PSLE Science Reality Lab Vol No.337 | “Magnitude 7 Earthquake” — Is It Just Seven Times a Magnitude 1?
PSLE Science Reality Lab: learn why earthquake magnitude is logarithmic rather than a linear multiplier, and why one event magnitude must be kept separate from the shaking intensity experienced at a particular place.
