Image Name: Neon...With a Twist! Gallery Page: Plasma Tubes Clear and phosphor coated tubes asymmetrically heated and twisted. 640 x 480 pixels  (62 KB)   Back to Gallery Page: Plasma Tubes  Would you like to post a comment on this image? » In order to post comments you need to Sign Up for an Account. » If you already have an Account, you can Sign in. to post a comment.