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What among the following is the hypothesis of Isaac Newton on what is light based on the straight line and shadow property of light? a stream of particles? or a wave? or heat?

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Amal Jeeva
Amal JeevaLv10
20 Sep 2020

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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Isaac Newton, working in a dark room, let a beam of sunlight pass through a hole in the window shade. His goal was to show that white light is composed of all the colors. He placed a prism in the path of the beam and saw that the white light spread out to form a color spectrum. To prove that the colors were not produced by the prism, he used a screen with a small slit to select one color of light. He then placed a second prism in the path of this monochromatic (one-color) beam.

a. What colors emerged from the second prism?

b. Next, Newton removed the filter (the slit) and used the second prism to form a beam of white light (Fig. P38.27). Why was this step necessary? 

Isaac Newton, working in a dark room, let a beam of sunlight pass through a hole in the window shade. His goal was to show that white light is composed of all

Ray optics is based on the assumption that light travels in a straight line. Diffraction effects (observed when light propagates through small apertures / slits or around small obstacles) disprove this assumption. Yet the ray optics assumption is so commonly used in understanding location and several other properties of images in optical instruments. What is the justification? 

Electromagnetic radiation is emitted when a charged particle movesthrough a medium faster than the local speed of light. Thisradiation is known as Cerenkov radiation. Cerenkov radiation isfound in many interesting places such as particle detectors andnuclear reactors and can even be seen by astronauts when cosmicrays traverse their eyes. It should be stressed that the particleis never going faster than the speed of light in vacuum (or c),just faster than the speed of light in the material (which isalways less than c). The creation of Cerenkov radiation occurs inmuch the same way that a sonic boom is created when a plane ismoving faster than the speed of sound in the air. The variouswavefronts that propagate in the material add coherently to createan effective shock wave. In this problem, you will become familiarwith this type of radiation and learn how to use its properties toget information about the particles that created it.
A)What is the threshold velocity v_threshold (water) (i.e., theminimum velocity) for creating Cerenkov light from a chargedparticle as it travels through water (which has an index ofrefraction of n=1.33)?
v_threshold (water) =c
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v_threshold (ethanol) =c
C)Which of the following best explains why neutrally chargedparticles can't give off Cerenkov radiation?

a)Neutral particles are too heavy to emit radiation.
b)Neutral particles don't interact with the electromagnetic fieldsof the medium.
c)Neutral particles can't move above the threshold velocity forCerenkov radiation.
d)Charged particles hit the nuclei of the material more often andthus create more radiation

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