互動光線折射模擬器：斯涅爾定律與全內反射
Welcome to Billy Sir’s Interactive Physics Masterclass. In this interactive simulation, we will explore the principles of geometric optics through light refraction. By adjusting the angle of incidence and the refractive indices of different mediums, you can observe how light bends when crossing boundaries.
歡迎來到 Billy Sir 的互動物理大師課。在這個互動模擬中，我們將透過光線折射來探索幾何光學的原理。藉由調整入射角與不同介質的折射率，您可以觀察光線在穿越邊界時如何發生偏折。
Light Refraction Simulator | 光線折射模擬器
Explore the principles of optics with our interactive Light Refraction Simulator. Learn how light bends when passing through different mediums like air, water, glass, and diamond using Snell's Law. 使用我們的互動式光線折射模擬器探索光學原理。透過斯涅爾定律，了解光線穿過空氣、水、玻璃和鑽石等不同介質時的偏折現象。
Interactive Physics: Snell's Law
互動物理：斯涅爾定律
- Drag red dot to move light source
- Drag handle to aim light direction
- Use Add Shape to place objects
- Select different materials for each shape
- Drag corner handles to resize shapes
This simulation uses Snell's Law: \( n_1 \sin(\theta_1) = n_2 \sin(\theta_2) \) to calculate accurate light refraction. Higher refractive indices (n) cause more bending of light towards the normal. Try different materials to see the effects, including Total Internal Reflection (TIR)!
模擬器使用斯涅爾定律計算光線折射。折射率 (n) 越高，光線偏折越明顯。嘗試不同材質以觀察全內反射 (TIR) 等現象！
How to use the simulator:
Drag the laser pointer to change the angle of incidence. Select different materials (like air, water, glass, or diamond) for the top and bottom mediums to see how the refractive index affects the light path and triggers total internal reflection.
如何使用模擬器：
拖曳雷射筆以改變入射角。為上方和下方介質選擇不同的材質（如空氣、水、玻璃或鑽石），觀察折射率如何影響光路並引發全內反射。
Understanding the Physics:
Snell’s Law (斯涅爾定律): The formula n1sin(θ1)=n2sin(θ2) describes the relationship between the angles of incidence and refraction. Light bends towards the normal when entering a denser medium.
Total Internal Reflection (全內反射): Occurs when light travels from a denser to a less dense medium and the angle of incidence exceeds the critical angle. The light is completely reflected back into the denser medium.
Refractive Index (折射率, n): A measure of how much light slows down in a material. A higher refractive index means the material is optically denser.
理解物理原理：
斯涅爾定律： 公式 n1sin(θ1)=n2sin(θ2) 描述了入射角與折射角之間的關係。當光線進入光密介質時，會向法線偏折。
全內反射： 當光線從光密介質進入光疏介質，且入射角大於臨界角時發生。光線會完全反射回光密介質中。
折射率 (n)： 衡量光在材質中減速程度的指標。折射率越高，代表該材質的光學密度越大。