On Photovoltaic Generators and Scattering Cross Sections

Subtitle: Dimensional Analysis again. Our photovoltaic generator has about 5 kW rated 'peak' power - 18 panels with 265W each. Peak output power is obtained under so-called standard testing condition - 1 kWp (kilo Watt peak) is equivalent to: a panel temperature of 25°C (as efficiency depends on temperature) an incident angle of sunlight relative to … Continue reading On Photovoltaic Generators and Scattering Cross Sections

Rowboats, Laser Pulses, and Heat Energy (Boring Title: Dimensional Analysis)

Dimensional analysis means to understand the essentials of a phenomenon in physics and to calculate characteristic numbers - without solving the underlying, often complex, differential equation. The theory of fluid dynamics is full of interesting dimensionless numbers -  Reynolds Number is perhaps most famous. In the previous post on temperature waves I solved the Heat … Continue reading Rowboats, Laser Pulses, and Heat Energy (Boring Title: Dimensional Analysis)