Test 2 - Resolution, Stereo

Airy pattern is

• Portrait of George Biddel Airy

• A light circle in the center of the diffraction pattern of an image of a point light source located at infinity, such as a star

• Point spread function

• Model of an object (diffraction grating instead of a real object)

Choose the correct statements about Airy pattern

• The central maximum contains 95.4% of all energy

• Consider a point light source located on the optical axis of the microscope at an infinitely large distance

• Airy disk diameter:
  d = 1,22 λ/ А

• Supposed that there are aberrations in the optical system

• Close to the resolution limit

• At the limit of resolution under incoherent illumination

• At the limit of resolution under coherent illumination

• The image corresponds to a single point

The numerical aperture (A) is defined as

The resolution limit is

• minimum distance between two points at which their images differ from the image of one point

• ratio of linear or angular size of an image and an object

• minimum size of a single point object that can be detected in a microscope

• clearly visible grating spectrum in the primary diffraction image

What type of microscope is shown in the picture?

• Stereoscopic microscope according to the Abbe scheme

• Stereoscopic microscope according to the Greenough scheme

• Binocular microscope

Сhoose the correct statements about objective and cover glass

• The slide and cover glass are NOT part of the microscope's optical system

• The parameters of the cover glass are included in the lens calculation

• Optical parameters of the slide glass are included in the calculation of the condenser

• Particular attention should be paid to the thickness, which should be about 1 mm for a slide glass, and about 1.7 mm for a cover glass

Choose the correct statements

• 4 – Condenser, 5 – Objective

• 2 – Objective, 7 – Rotating mirror

• 8 – Field diaphragm

• 4 – Objective, 5 – Condenser

• 9 – Objective

What is the wedge prism?

• Prisms (usually glued together) used to divide a light beam into two or more directions

• Refracting prisms with a small refractive angle

• Prisms that convert natural light into linearly polarized light

• A system of prisms designed to wrap the image (obtaining a direct image)

What kind of scattering happens without changing the wavelength?

• Fluorescence

• Raman scattering

• Rayleigh scattering

• Phosphorescence