convergent
Two or more lines meeting at a common point are called intersecting lines.
Minimum and maximum requirements: three straight lines meeting pairwise. Minimum and maximum requirements: three straight lines meeting pairwise. Minimum and maximum requirements: three straight lines meeting pairwise. Minimum and maximum requirements: three straight lines meeting pairwise.
two lines meeting at a point.
An angle
Lines that share a common point are called an intersection, or intersecting lines.
Intersecting lines
are convergent lines.
Two or more lines meeting at a common point are called intersecting lines.
Yes. If the star is moving away from the Earth, its spectral lines will shift towards the red end of the spectrum. If it is moving towards the Earth, its spectral lines will shift towards the violet end of the spectrum. This is due to Doppler effect.
The spectral lines move towards one direction, or towards the other direction, depending on the relative speed.
They will be blueshifted, that is their wavelengths will be shortened and their frequencies increased.
Astronomers determine the speed at which a galaxy is moving by measuring the redshift of light coming from the galaxy. The redshift is caused by the Doppler effect, which shifts the wavelength of light depending on the motion of the source. By analyzing the redshift, astronomers can calculate the velocity of the galaxy relative to Earth.
As a star moves closer to Earth, its spectral lines would appear blueshifted. This means that the wavelengths of the lines would be compressed and shifted towards the blue end of the spectrum due to the Doppler effect. Observers on Earth would measure the star's light as having shorter wavelengths compared to when the star is further away.
Minimum and maximum requirements: three straight lines meeting pairwise. Minimum and maximum requirements: three straight lines meeting pairwise. Minimum and maximum requirements: three straight lines meeting pairwise. Minimum and maximum requirements: three straight lines meeting pairwise.
Intersection.
It means the heading towards us, red means it is moving away from us.
They both cross paths. Intersecting lines can cross paths in any ways, but perpendicular lines have to cross at 90 degrees.