How do we account for regularly reflected beams in diffraction experiments with electrons and atoms?

Explained

Explanation:

Electrons and atoms behave like a wave in a diffraction experiment. They produce exactly same pattern of multiple dark and bright fringes as they are produced by a monochromatic beam of light source.

Electron diffraction, may be regarded as a method used in study of matter by firing electrons at a sample and observing the resulting interference pattern. This phenomenon is commonly called as wave–particle duality, that states that a particle of matter (in this case the incident electrons) can be described as a wave. For this very reason, an electron can be regarded as a wave much like sound or water waves. This technique is similar to X-ray and neutron diffraction.

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

the answer is b ) square root of 5