What Is the "Cosmological Redshift

question 9

Multiple Choice

What is the "cosmological redshift"?

• A) The stretching of wavelengths of photons by the Doppler shift,because they are emitted by galaxies that are moving away from us
• B) The loss of energy of photons as they interact with virtual particles in the vacuum,so that their wavelengths gradually increase as they travel toward us through space
• C) The stretching of the wavelengths of photons as they travel through expanding space
• D) The stretching of the wavelengths of photons as they pass through absorbing matter in galaxies between us and the emitting galaxy

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Definitions:

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Refers to the act of informing buyers about potential risks or dangers associated with a product or service.

Sophisticated-user

A doctrine in law that exempts a manufacturer from liability if the user of its product is deemed to have expertise or knowledge sophisticated enough to assess the product's risks.

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A legal concept in product liability whereby a manufacturer is held liable for not providing adequate warning to consumers about the risks or hazards associated with using a product.