![Just as in mathematics principles in physics often lead to other useful results Fermats principle states that light travels in a path that requires the least time How light behaves when reflected Just as in mathematics principles in physics often lead to other useful results Fermats principle states that light travels in a path that requires the least time How light behaves when reflected](https://content-grail-production.s3.amazonaws.com/quetsion-media/d0466920-9833-4040-b830-fe092dd8ccb3-7998644a.jpg)
Just as in mathematics principles in physics often lead to other useful results Fermats principle states that light travels in a path that requires the least time How light behaves when reflected
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![optics - Huygens' Principle During Reflection: comparing wavelets from before reflection with wavelets from during reflection - Physics Stack Exchange optics - Huygens' Principle During Reflection: comparing wavelets from before reflection with wavelets from during reflection - Physics Stack Exchange](https://i.stack.imgur.com/6RUAx.png)
optics - Huygens' Principle During Reflection: comparing wavelets from before reflection with wavelets from during reflection - Physics Stack Exchange
![Schematic of the working principle. A straight microfluidic channel... | Download Scientific Diagram Schematic of the working principle. A straight microfluidic channel... | Download Scientific Diagram](https://www.researchgate.net/publication/272648599/figure/fig1/AS:392731525435394@1470645901814/Schematic-of-the-working-principle-A-straight-microfluidic-channel-blue-line-is-hit-by.png)