Recent content by isnainidiah

Okay, thak your for the explanation

So, we need the purpose first, then we can use many theories to analyse it, isn't it ?

I asking about basic shapes of lenses or mirror and also another shapes of lenses or mirror,

So, the design of mirror and lens just for certain purpose, is'n it? Then, we derived the fermat principle that can we use to design the mirror and lens for certain purpose, is'n it

Yeah i mean, how we use fermat principle to explain the required shapes of lenses and mirrors ?

Okay thank you,, So when we talk about optic geometry, we just explain the reflection and refraction, isn't it ?? then what if the answer to the question "how do you use Fermat's principle to explain the need for forms of mirrors and lenses"?

How do you use Fermat's principle of least time to explain various concepts in geometrical optics?

Hmm okay, thank you for the video,,

How about using fermat's principle for mirrors ?

How do we use Fermat's principle of least time to explain the required shapes of lenses and mirrors?

Hmmm i got the idea,, thank you for your explanation Yeah, you're right i come from southeast asian countries

I mean, why not another quantity such as amplitudo or frequency become the parameter ?

But, why wavelength is choosen as parameter ?

I want to ask something about light, light can be defined as ray, wave, or particle. The group formed because of the wavelength, if the wavelength is less than the dimension of equipment it is grouped into ray, if the wavelength is equal to the dimension of equipment it is grouped into wave, and...