Óptica geométrica e ondas · GCSE Physics Topic 6
Simulador óptico de microscópio e telescópio
Simulador óptico de microscópio composto e telescópio astronômico: sistema de duas lentes
- No navegador
- Sem cadastro
- Dedução ao vivo
- Modo projetor
- Folha de exercícios A4
Janela de simulação 3D● 60 FPS
Variáveis de controle do experimento
cm
cm
cm
Deduções e métricas em tempo real
Ampliação angular total
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Imagem intermediária da objetiva v1
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Natureza da imagem final
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Separação do tubo (confocal)
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Dedução de fórmulas em tempo real
Fórmula fundamental:
--Substituição de valores:
--Estado físico: --
Exemplos clássicos e armadilhas de exame
Worked Problem
Problema: A Keplerian telescope has f_obj = 100cm and f_eye = 5cm. Find tube length and angular magnification.
Derivação passo a passo:
- Tube length L = f_obj + f_eye = 105cm. Angular magnification M = f_obj / f_eye = 100 / 5 = 20x.
Worked Problem
Problema: What image does a microscope objective form? What about the eyepiece? Is the final viewed image upright or inverted?
Derivação passo a passo:
- Objective forms inverted magnified real image. Eyepiece forms upright magnified virtual image. Final image is inverted relative to object.
Folha de investigação em aula e exercícios
Q1. Variant 1: If a cell appears in the top-left of a microscope field, which way should the glass slide be shifted to center it?
Answer Key: Shift slide toward top-left! Inverted optics require moving the physical specimen in the direction of the offset to center it.
Q2. Variant 2: Why are astronomical telescope objective mirrors built with immense diameters (meters wide)?
Answer Key: 1) Light grasp: larger aperture collects far more photons from faint distant galaxies; 2) resolution: larger diameter reduces diffraction, boosting resolution.
Q3. Variant 3: In dim room lighting, how should a microscope condenser reflector and diaphragm be adjusted?
Answer Key: Use the concave mirror reflector (converges ambient light) and select the largest diaphragm aperture for maximum throughput.
Perguntas frequentes e erros comuns
Why does the view turn dimmer when switching from low-power to high-power objective?
High-power objectives capture a narrower specimen area, reducing photon collection and dispersing light over a wider magnified image.
Why don't astronomical telescopes flip images upright for astronomers?
There is no "up" in deep space, and adding extra erect prisms causes photon reflection losses, dimming faint distant stars.
Can telescopes magnify infinitely? What fundamental physics imposes a ceiling?
Diffraction limit (Rayleigh criterion)! Finite lens apertures produce Airy diffraction disks; excessive magnification produces blurred fuzz with no new detail.
Why was the Hubble Space Telescope launched into orbit rather than atop a tall mountain?
Earth's atmospheric turbulence causes twinkling and blurs resolution, while absorbing crucial ultraviolet and X-ray spectral windows.