Electrons pass through a 320-nm-diameter circular aperture,
forming a diffraction pattern on a detector 80 cm...
Electrons pass through a 320-nm-diameter circular aperture,
forming a diffraction pattern on a detector 80 cm behind the
aperture. What is the kinetic energy of the electrons in eV if the
width of the central maximum is 0.26 mm?
Electrons pass through a 250-nm-diameter circular aperture,
forming a diffraction pattern on a detector 1.2 m behind the
aperture. What is the kinetic energy of the electrons if the width
of the central maximum is 0.37 mm?
You want to photograph a circular diffraction pattern whose
central maximum has a diameter of 1.2 cm . You have a helium-neon
laser (?=633nm) and a 9.0×10?2-mm-diameter pinhole.
How far behind the pinhole should you place the viewing
screen?