beam-energy-floor-three-row-scan - Electromagnetic Radiation Pressure and Momentum Step by Step

Finite beam time is scanned below, at, and above an energy floor. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Finite beam energy is scanned through an energy floor

The irradiance source is 6 watts per square meter and illuminated area stays 2 square meters. The time window is 2 s. The asserted product gives 24 J which is below the 48 J floor.

E=IAt=6\cdot2\cdot2=24\ \text{J}

Finite beam energy is scanned through an energy floor

The irradiance source is 6 watts per square meter and illuminated area stays 2 square meters. The time window is 4 s. The asserted product gives 48 J which is at the 48 J floor.

E=IAt=6\cdot2\cdot4=48\ \text{J}

Finite beam energy is scanned through an energy floor

The irradiance source is 6 watts per square meter and illuminated area stays 2 square meters. The time window is 6 s. The asserted product gives 72 J which is above the 48 J floor.

E=IAt=6\cdot2\cdot6=72\ \text{J}