Things I learned
In the past few hours #1
Spent an hour fighting a messy expression full of β's. Turned out it was just (a − b)² in disguise, and the whole thing equalled 1.
Lesson: when the maths gets ugly, I’ve usually made it ugly myself.
🚀 500K views milestone unlocked!
This is the first time I've stayed consistent with YouTube, and it's finally showing results. Slowly but surely. 📈
Let's keep the grind going, folks! 💪🔥
Perturbed FL Universe:
A perturbed Friedmann–Lemaître (FL) universe is a universe that is assumed to be homogeneous, isotropic, and expanding (or contracting) in its ideal background state, with small deviations or fluctuations in quantities such as the metric and matter density.