Can a sound wave travel through plastic paper/bag? How do light, sound, and radio waves travel in space if space is a void and there is not any matter for the aforementioned to travel through? How far can sound waves travel? Simply: Sound is propagated in a gas (air) and space has no air.
With resistors many think carbon comps are required for true mojo, especially as plate loads. Others discount the mojo factor completely and go with metal film as the most stable and quiet in operation. While others split the difference and use carbon film for some of the mojo with better stability and quieter operation.
Resistor sources are considered to be the simplest forms of current source. They involve a circuit that contains a resistor in series with a source of voltage. The current generated from this system is equivalent to the amplitude of the voltage, divided by the resistance of the resistor. A resistor current source is generally not considered effective on its own because of the large amount of power lost in the resister, but many types of current source use elements of this setup. For example, active current sources often substitute a different element for the resistor.