Open Roads Radio forum for Ham, Amateur Radio and RV camping - View Single Post - One-question quiz #3

wa8yxm · 10-30-2014, 08:32 AM

NO, they do not, Nor does light, else a prism would not work and there would be no such thing as a rainbow.

But to make it easier to understand.. Coax Cable (and other feed lines) have a specification called Velocity Factor.. Coax as I recall is usually 0.66.

The speed of light in metric, very slightly rounded, is 300 Million Meters per second (299.999,I forget how many nines it goes out and ends in a 7 as i recall so it's not much rounded)

in coax it would be 300*0.66 or about 200 meters (Again rounded) per second.

10-30-2014, 08:32 AM	#2
wa8yxm Senior Member Join Date: Nov 2007 Location: Mobile, on the road Posts: 1,139	NO, they do not, Nor does light, else a prism would not work and there would be no such thing as a rainbow. But to make it easier to understand.. Coax Cable (and other feed lines) have a specification called Velocity Factor.. Coax as I recall is usually 0.66. The speed of light in metric, very slightly rounded, is 300 Million Meters per second (299.999,I forget how many nines it goes out and ends in a 7 as i recall so it's not much rounded) in coax it would be 300*0.66 or about 200 meters (Again rounded) per second.