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70 in the bible (including the Daniel 9 prophecy)

Why are there 12 notes?

Why the Number 12 is Prominent in Various Religions

Why the number 12 is used to tell time

How Low Pass Filters Work using a Resistor and Inductor (RL)

How High Pass Filters Work using a Resistor and Inductor (RL)

How High Pass Filters Work using a Resistor and Capacitor (RC)

What is the D chord? Why do A and F# go well with D? Answered graphically with math.

Introduction to analog to digital conversion

How to solve for amplification and gain in a transducer (thermometer example)

Introduction to transducers and simple example of amplifying from microphone input to speaker output

How to convert 120 Vrms AC to 5 V DC (like AC to DC conversion for a USB charger)

Introduction to transformers

What is RMS Voltage? A mathematical explanation.

What is RMS Voltage? A graphical explanation.

Finding Voltage using Kirchhoff's Voltage Law (example problem)

Introduction to Kirchhoff's Voltage Law

Choosing an electric vehicle with a decision matrix

Derivation of Snell's Law

Intuition behind Snell's Law

What does e^ix even mean?

Derivation of Doppler Equation for RADAR

How Low Pass Filters Work

Finding current through RLC circuit including resistor, inductor and capacitor