GyaanCore

Never drive between two trucks. Physics will pull you under their wheels.

Venturi Effect: Gap between trucks = invisible nozzle. Air speeds up → static pressure drops.

Bernoulli’s Principle: High velocity = Low pressure. You create a “highway vacuum.”

Higher outside pressure PUSHES your car/bike into the low-pressure death zone. Same effect capsized ships in the Suez.

Save this for your Fluid Mechanics + Aerodynamics unit. High-yield study notes for GATE aspirants and B.Tech semesters are in bio.

Your heart uses less power than a lightbulb. Without this trick, you’d need a car engine.

Fåhræus-Lindqvist Effect: In vessels

Why does spaghetti always snap, never just bend?

Euler’s Critical Load: P_{cr} = π²EI / (L_e)². Slender columns fail by buckling, not crushing.

Lever of Doom Loop: Tiny curve → bending moment → column bows → lever arm grows → SNAP.

Engineers fight it: I-Beams push mass away from center. Fixed supports cut effective length in half = 4x stronger.

Save this for your Strength of Materials + Machine Design unit. High-yield study notes for GATE aspirants and B.Tech semesters are in bio.

Entropy is why you can’t un-break an egg. And why the universe will die.

Second Law: Ordered macrostate = 1 way. Chaotic microstates = trillions of ways. Probability always wins.

Boltzmann: S = k_B lnΩ. More microstates = higher entropy = time moves forward.

Heat Death: Max entropy = no energy gradients = eternal, cold balance.

Save this for your Thermodynamics + Entropy unit. High-yield study notes for GATE aspirants and B.Tech semesters are in bio.

h is the most guessed number in heat transfer. 🔥

Engineers look up "typical h values," pick one that feels right, and call it engineering. But h isn't a material constant — it's a result. And if you don't calculate it properly, it will fail quietly until something breaks loudly.
Swipe for the full breakdown: what h actually measures, why it varies by 10,000×, and the 3 dimensionless numbers that let you calculate it correctly for any situation. 👉

Save this. The cheat sheet on the last slide is the one reference you'll use in every convection problem.

📌 Follow for mechanical engineering explained the right way.

Liquid that turns into solid armor on impact. Science, not sci-fi.

Shear Thickening Fluid: At rest, particles slide like lubricant. Bullet hits = “Microscopic Traffic Jam.” Particles lock into hydroclusters — instant solid barrier.

Used in Enhanced Kevlar: Flexible until the microsecond of impact. Power Law n > 1 means viscosity spikes with shear rate.

Save this for your Rheology + Material Science unit. High-yield study notes for GATE aspirants and B.Tech semesters are in bio.