In a fluorescent tube, how are the atoms in the tube excited?

As there is a potential difference in the fluorescent tube. Electrons will flow from negative to the positive . These electrons collide with the orbital electrons in the atoms of the fluorescent tube. As there is an energy transfer from the free moving electron to the orbital electrons. The orbital electrons gain energy and become excited. They now exist on a higher enery level until they de-excite.

SW
Answered by Shaun W. Physics tutor

4770 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Calculate the length of a 120m (as measured by the astronaut) spaceship travelling at 0.85c as measured by a stationary observer


2 identical trolleys of mass M(one is loaded with 2 blocks of mass m) are on a ramp inclined at 35° and are connected by a wire that passes around a pulley at the top of the ramp. They are released and accelerate accordingly. Show that a=(mgsin35°)/(M+m).


What is a stationary wave?


Draw the electric field lines produced by a negative point charge and calculate the electric field strength at a distance of 50mm from a point charge of size -30nC.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences