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∙ 15y agoThey are reflected round the curve of the Earth off layers in the atmosphere which act as mirrors (the ionosphere).
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∙ 15y agoAM carrier waves have lower frequencies compared to FM waves, which allows them to travel farther. Lower frequencies have longer wavelengths, which can diffract and bend around obstacles, enabling AM signals to cover long distances by reaching around the curvature of the Earth. This property makes AM transmission suitable for long-distance communication, such as broadcasting over large geographic areas.
Alpha radiation is a type of radiation that can only travel a short distance (a few feet) in air. This is due to its relatively large size and positive charge, which causes it to interact strongly with atoms in the air and lose energy quickly.
Sonar frequencies typically range from around 20 kHz to several hundred kHz. Lower frequencies can travel long distances in water, but higher frequencies provide better resolution for detailed imaging. The choice of frequency depends on the specific application and environmental conditions.
Air travel has become the primary mode for long distance trips due to its speed and efficiency in covering vast distances in a relatively short amount of time. The development of advanced aircraft technology and infrastructure, along with competitive pricing and convenience, have all contributed to the popularity of air travel for long distance trips. Additionally, air travel offers a wide range of destination options and frequent flight schedules, making it a convenient choice for travelers.
You can calculate the time it takes to travel by dividing the distance by the rate. The formula is time = distance / rate. This will give you the time in hours it takes to travel the given distance at the given rate.
Air is a better carrier of sound than vacuum. In air, sound waves can travel because air molecules can vibrate and transfer energy. In a vacuum, there are no molecules to transmit sound waves, so sound cannot travel.
High frequencies are more damped by air than the bass frequencies.
higher frequencies attenuate more the further distance they travel.
The plural of frequency is frequencies. As in "radio waves travel on different frequencies".
During the Pax Romana it was relatively safe to travel on Roman roads.During the Pax Romana it was relatively safe to travel on Roman roads.During the Pax Romana it was relatively safe to travel on Roman roads.During the Pax Romana it was relatively safe to travel on Roman roads.During the Pax Romana it was relatively safe to travel on Roman roads.During the Pax Romana it was relatively safe to travel on Roman roads.During the Pax Romana it was relatively safe to travel on Roman roads.During the Pax Romana it was relatively safe to travel on Roman roads.During the Pax Romana it was relatively safe to travel on Roman roads.
Frequencies over 30 Mhz normally travel through the ionosphere, whereas frequencies under 30 Mhz will normally bounce off the ionosphere, and back to earth.
High frequencies are more damped by air than low frequencies.
Because at night the sun goes down, which is a good thing for frequencies, because the sun is giving of radiation which is disrupting the frequencies. so at night nothing is disrupting the frequencies.
As frequency increases, the distance of propagation typically decreases due to higher attenuation and greater susceptibility to obstacles and interference. Lower frequencies tend to travel farther because they can penetrate obstacles and travel longer distances without significant loss.
A person should be able to travel the posted speed limit with a Thule 1600 car top carrier. This is assuming the car top carrier is mounted to the car properly.
All communication systems use electromagentic waves which by the law of Superposition of Waves travel independently in any meadium and hence do not interfere but if the frequencies tend to match then the carrier waves with amplitude modulation are more affected and give poor quality sound at the receiving end than the frequency modulated carrier waves.
Alpha radiation is a type of radiation that can only travel a short distance (a few feet) in air. This is due to its relatively large size and positive charge, which causes it to interact strongly with atoms in the air and lose energy quickly.
Speed Average speed- the total distance traveled divided by the time it takes to travel that distance Velocity is also the distance or displacement divided by the time