Author: eduKate Asia
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PSLE Science Reality Lab Vol No.346 | “Drag Coefficient = 0.30” — Does That Mean 30% of the Force Is Drag?
PSLE Science Reality Lab: learn why drag coefficient Cd is a dimensionless modelling coefficient, not “30% drag”, and why speed, air density, reference area and test conditions still matter.
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PSLE Science Reality Lab Vol No.345 | “CAPE = 3000 J/kg” — Is a Severe Thunderstorm Guaranteed?
PSLE Science Reality Lab: learn why CAPE is a calculated measure of potential energy for convection, not a direct storm-intensity reading or a guarantee that severe weather will occur.
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PSLE Science Reality Lab Vol No.344 | “Planet Equilibrium Temperature = 300 K” — Is the Surface Really 300 K?
PSLE Science Reality Lab: learn why an exoplanet equilibrium temperature is a model-derived radiative-balance estimate, not a thermometer reading of the planet’s surface or proof of habitability.
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PSLE Science Reality Lab Vol No.343 | “Water Year 2026” — Did It Begin on 1 January 2026?
PSLE Science Reality Lab: learn why a USGS “Water Year 2026” runs from 1 October 2025 to 30 September 2026, and how to align time windows before comparing rainfall, streamflow or drought claims.
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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.
