Summary of "Física: Eletromagnetismo, Ótica e Termodinâmica - Prática 01"

Scientific concepts / nature phenomena presented

The video is a lab/practical session focused on optical refraction (within a broader course that also includes electromagnetism and thermodynamics, though only optics is treated here).

The core activity uses Snell’s law (also called the law of refraction) to find the refractive index of two “mystery” materials:
- Mystery Medium A
- Mystery Medium B
Refraction geometry uses angles measured with respect to the normal.
The simulator involves:
- Setting an angle of incidence
- Setting/observing an angle of refraction
- Solving for the refractive index (n) of the unknown medium (with air treated as (n \approx 1)).

The video instructs analyzing how wave properties change after refraction:
- Wavelength
- Frequency
- Wave speed
Example wavelengths mentioned (associated with visible light colors):
- 400 nm (violet region)
- 600 nm
- 700 nm
The task is to identify trends, such as:
- Whether wavelength increases or decreases
- Whether wave speed changes, and how
- How (or whether) the refracted wave’s characteristics vary

A final part focuses on the angle of deviation from refraction through a prism-like setup:
- Given angle of incidence = 45°
- And angle of refraction = 17°
The exercise asks to determine the angle of deviation.

Set:
- Mystery Medium A as the unknown material
- Angle of incidence (i = 45^\circ)
- Angle of refraction (r = 17^\circ)
Apply Snell’s law to solve for the refractive index (n_A)
- Air is assumed (n \approx 1)

Set:
- Angle of incidence (i = 44^\circ)
- Angle of refraction (r = 30^\circ)
Apply Snell’s law again to solve for the refractive index (n_B)

Select the wave in the simulator.
Repeat observation for:
- 400 nm, then 600 nm, then 700 nm
For each wavelength, examine changes in:
- wavelength
- frequency
- wave speed
Observe whether the refracted wave’s characteristics change.

Using the earlier incidence/refraction pair (45° → 17°), determine the angle of deviation.

PetColor (software / educational platform)
Google (referenced as a starting point for searching the site)
No individual researchers or scientific authors are explicitly named in the subtitles.