Геометрическая оптика и волны · GCSE Physics Topic 6
Симулятор дисперсии света в призме и радуги
Симулятор дисперсии света в стеклянной призме и спектрального разложения
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- Вывод формул
- Режим проектора
- Печатный лист A4
Окно 3D симуляции● 60 FPS
Параметры эксперимента
°
°
Расчёты и показатели в реальном времени
Угол отклонения красного
--
Угол отклонения фиолетового
--
Дисперсия Δδ
--
Угол наименьшего отклонения
--
Вывод формул в реальном времени
Основная формула:
--Подстановка значений:
--Физическое состояние: --
Разбор типовых задач и анализ экзаменационных ошибок
Worked Problem
Условие задачи: Why does red appear on top and violet on bottom after prism dispersion?
Пошаговый вывод формул:
- Violet has shortest wavelength and highest refractive index, experiencing greater deviation than red.
Worked Problem
Условие задачи: What are the 3 primary colors of light vs pigment? What colors do their equal mixtures produce?
Пошаговый вывод формул:
- Primary light: Red, Green, Blue (additive, mixes to white). Primary pigment: Cyan, Magenta, Yellow (subtractive, mixes to black).
Рабочий лист для урока и домашние задания
Q1. Variant 1: What invisible rays lie outside red and violet ends? Give practical applications.
Answer Key: Outside red is infrared (thermal imaging, remote controls). Outside violet is ultraviolet (sterilization, counterfeit detection).
Q2. Variant 2: How did Newton prove that prisms do not dye white light?
Answer Key: 1) Monochromatic ray test: Isolated red light does not split in a second prism; 2) recombination: an inverted second prism merges colors back to white.
Q3. Variant 3: Under a magnifying glass, what 3 subpixel phosphor dots compose a color TV screen?
Answer Key: Red, Green, and Blue (RGB) dots. Modulating their individual intensities synthesizes all visible colors.
Часто задаваемые вопросы и типичные заблуждения
Why is the sky blue and sunset red?
Rayleigh scattering. Short blue wavelengths scatter strongly across the sky. At sunset, light traverses thicker atmosphere; only long red wavelengths penetrate.
Why are rainbows only visible looking away from the sun?
Rainbows are formed by raindrops retro-reflecting sunlight at ~42°. The observer must face away from the sun toward the rain curtain.
Do infrared thermometer guns shoot infrared rays at your head?
No! All objects above absolute zero emit thermal infrared radiation. The gun passively absorbs body infrared photons to compute temperature.
What determines the color of transparent vs opaque objects?
Transparent: the color of light transmitted (red glass passes red). Opaque: the color of light reflected (green leaves reflect green). White reflects all, black absorbs all.