kékeltolódásról

Kékeltolódásról is a Hungarian term referring to redshift, a phenomenon in astronomy and cosmology. It describes the shift of light waves towards the red end of the electromagnetic spectrum. This shift occurs when a light source is moving away from an observer. The greater the distance the source is moving away, the larger the redshift.

The concept of redshift is directly related to the Doppler effect, which explains how the frequency of a wave changes based on the relative motion of the source and observer. In the case of light, a receding source causes its emitted wavelengths to stretch, resulting in a shift towards lower frequencies and longer wavelengths, which correspond to redder colors. Conversely, a source moving towards an observer would exhibit a blueshift, a shift towards the blue end of the spectrum.

Kékeltolódásról is a fundamental tool for astronomers. By measuring the redshift of light from distant stars and galaxies, scientists can determine their velocity and infer their distances. The observation of a universal redshift in the light from most galaxies provided key evidence for the expansion of the universe, as described by the Hubble-Lemaître law. This law states that the recession velocity of a galaxy is directly proportional to its distance from us. Studying the patterns and magnitudes of kékeltolódásról allows cosmologists to understand the age, expansion rate, and ultimate fate of the universe.