|
If you click and drag the red dots you will be able to study how images are formed in this concave mirror. You can modify the radius of the mirror's curvature and the size and distance of the image. You can observe the nitidity of the specular image. The visual shows three
theoretical images which are those defined by the intersection of the
three rays. The image in reality is always a little diffuse and
is the product of the partial convergence of all the rays. The
phenomenon which is responsible for making spherical mirrors produce
recognisable images in practice is due to the fact that when the object
which is going to be reflected is small, that is, when the angles of
incidence are all small, all the reflected rays pass very close to the
same point. This produces a more or less nitid image which is the one
we see and which is an enlargement or a reduction depending on whether
the object is nearer to or farther from the radius of the mirror. |
|
|
|
|
