Why doesn't a 75 Ohm cable measure 75 Ohms?

We investigate a 75 Ohm TV cable to see where the 75 Ohm measurement comes from. We also look at reflections in the cable and why you cant just connect more than one device like a TV to a signal source without loosing signal power.

• #science_technology
• #characteristic_impedance
• #transmission_line
• #75_ohms
• #reflections
• #signal_splitter
• #time_domain_reflectometry
• #radar