A single slit with a width of 2019 * 109 m creates its initial minimal for 624 nm light at an angle of 18°.
How does diffraction work?
Waves spreading outward around obstructions are known as diffraction. Diffraction happens with sound, electromagnetic radiation like light, X-rays, and gamma rays, as well as with incredibly minuscule moving particles like atoms, neutrons, and electrons that exhibit wavelike qualities. Diffraction prevents the creation of sharp shadows as one of its effects. In order to spread out and illuminate regions at which a shadow is anticipated, light must be bent around corners, which is known as diffraction.
Calculation:
Provided for a single slit, m=1
λ = 624 *10⁻⁹
sinθ = sin 18⁰
Therefore,
asinθ=mλ
a =
⇒a = 2019 *10⁻⁹ m
Therefore the width of a single slit is 2019 *10⁻⁹ m.
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A. Flueorescece. <span>The light from these ultraviolet lamps reacts with the chemicals of a mineral and causes the mineral to glow.
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Answer:
When you freeze the already cracked glow stick the chemical reactions are slowed down. When you take it out of the freezer and it reaches room temperature the chemical reaction will go on as 'normal'. XD hope this helps
Explanation:
Answer :
For a given reaction to take place, there might be at least one of these (7) signs;
- formation of gas bubbles, formation of a precipitate (creation of a solid from a solution), a change in color, a change in volume (due to change in density), a change in temperature (endothermic or exothermic), change in taste or smell and emission of light or fire..