A miniature head-mounted two-photon microscope small enough for a rat to carry allows researchers to visualize neuronal signaling while the animal freely interacts with its environment. It is often ...

The optical microscope relies on light and consists of two main lenses: • The objective lens, which magnifies the object you wish to observe (with various magnification options). • The eyepiece, which ...

It’s relatively easy to understand how optical microscopes work at low magnifications: one lens magnifies an image, the next magnifies the already-magnified image, and so on until it reaches the eye ...