Final answer:
Remote sensing involves the monitoring of distant objects without physical contact, often used in radar astronomy and satellite transmissions. The technology can determine the distance of diverse objects and monitor Earth's temperatures and climate changes. Infrared radiation can also be detected to observe radiant heat transfer.
Step-by-step explanation:
Remote sensing is defined as the monitoring of a distant object without physical contact. An example of this process is found within the discipline of radar astronomy, where radio waves are transmitted to an object in our solar system and then the reflected radio radiation is detected. The time required for this round trip can be measured electronically with great precision, enabling us to determine the distance to the object. This process relies on the understanding that radio waves travel at the speed of light.
This type of technology is commonly employed in modern satellite transmissions, as most satellite-transmitted information is carried on microwaves. By detecting and timing microwave echoes, radar systems can determine the distance to diverse objects, from clouds and aircraft to the surface of Venus. Remote sensing technologies also play a vital role in monitoring the Earth's temperatures and climatic changes.
Remote sensing is not limited to the observation of physical entities. Infrared radiation can be detected by some satellite systems to examine radiant heat transfer from objects on Earth. This technology allows the recognition of specific objects and even individuals by their infrared emissions, which is helpful for various applications such as surveillance and meteorology.
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