Sound waves consist of both compression and rarefaction. The compression is caused when something pushes air away, and it bunches up, causing a pressure increase. Rarefaction is the reverse; when you pull away, you create a low pressure area and pull the air with it. However, the overall energy expenditure moves outwards, as each successive volume of air is affected by the one before it, which was affected by the one before that, all the way back to the source.
the photons travel outward from a light source in all directions.
When a disturbance occurs, waves typically travel outward in all directions from the source of the disturbance. This causes the waves to spread out and propagate through the medium in which they are traveling.
Photons travel outward from a light bulb in all directions
In the radiation zone of a star, energy is transferred through electromagnetic radiation in the form of photons. These photons travel outward from the core of the star through the radiation zone, carrying thermal energy with them. This process allows the star to maintain its equilibrium by balancing the inward gravitational force with the outward pressure generated by this energy transfer.
In the SOFAR layer (Sound Fixing and Ranging layer), sound does travel slowly due to the combination of low temperature and high pressure. This slower speed causes the sound waves to refract inward towards the layer, enabling them to travel long distances with minimal loss of energy.
Outward. Energy is converted in the Sun's core (center), through nuclear fusion, and producing heat; from there, it gradually moves outward.
Outward from the source.
the photons travel outward from a light source in all directions.
When a disturbance occurs, waves typically travel outward in all directions from the source of the disturbance. This causes the waves to spread out and propagate through the medium in which they are traveling.
Photons travel outward from a light bulb in all directions
In the radiation zone of a star, energy is transferred through electromagnetic radiation in the form of photons. These photons travel outward from the core of the star through the radiation zone, carrying thermal energy with them. This process allows the star to maintain its equilibrium by balancing the inward gravitational force with the outward pressure generated by this energy transfer.
Photons travel outward from a light bulb in all directions.
It could either be the time of travel of echo from reflector to source, or the round-trip from source to reflector and back to source - you'd have to make clear which in the context you are describing.
In a low pressure system winds travel in a counterclockwise direction and inward
inward
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Seismic Waves