If there is a red line moving across your arm, it might mean you were bitten by something and it gave you an infection. The red line is your tendon swelling. See a doctor immediatley
Sounds like herpies zolster
The red line in the second graph shows the same action spectrum corrected for the unequal number of photons emitted across the visible spectrum.
Go to a doctor. I think that's a sign of blood poisoning or infection.
the red line is the warm front and the cold front is the blue line
put your pen on the paper and start moving your arm
She was the soonest to finish the assignment. The red car was the soonest across the finish line.
The Orion arm
It could be a sign of infection. You really should have a doctor check it out.
The German flag goes across. First strip is black. On the second line is red and then at the bottom is yellow.
Yes, our solar system is located in the part of th milky way known as the red arm.
If you have red lines running away from a bite on your skin then that means it is infected. It needs treated and if the lines multiply or get bigger, you should see a doctor.
In a spectral line from a rotating body such as a star, some of the matter emitting the line is moving toward you and has a part of its line shifted slightly to the bluer end of the spectrum, some is moving away and has a slight shift toward the red end, and the rest is moving more or less across your line of sight and the shift is normal.