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Because of the wave nature of electromagnetic waves, it's impossible to radiate
them from a 'launching structure' that has finite dimensions, and expect them
not to spread wider as they proceed over a great distance. So we must picture
any electromagnetic transmission ... whether it's light, radio, radar, microwave,
X-ray, etc. ... as a cone of energy as it proceeds from the transmitter, beginning
with a small cross-section as it leaves the launcher, and growing wider and wider
as it proceeds.
Realizing this, we now have a constant, fixed amount of power, propagating
across a surface area that gets bigger and bigger as we move farther and
farther from the source. So for a receiving antenna of any given size, it makes
sense that the farther the receiver is from the source, the less signal power
it's able to intercept, since that power is spread over a progressively larger
area as the distance increases.
People will also hasten to mention that there are many things all around in
the natural environment that absorb power from the signal, such as trees,
buildings, atmosphere, rain, clouds, soil, etc. They are correct, but these losses
are only a very small part of the weakening of microwave signals with distance.
By far the greatest factor is the geometric spreading with distance, described
above.
What else can I help you with?
Hand signals in sipak takraw?
In sipak takraw, hand signals are essential for communication between players, especially during a match. These signals can indicate strategies, substitutions, or specific plays without verbal communication, allowing teams to maintain focus and coordination. Each signal is typically simple and clear, making it easy for teammates to understand quickly during fast-paced gameplay. Effective use of hand signals enhances teamwork and can contribute to a team's overall performance.
What is a daytime phone number?
A daytime phone number is a telephone number that is typically used during regular business hours for communication purposes. It is often provided by individuals or organizations as a means of contact during the daytime. This number is distinct from a mobile or cell phone number and is usually associated with a landline phone that is used primarily for professional or formal communication.
What does a signal corpsman do?
A signal corpsman is a military specialist responsible for establishing and maintaining communication systems within a unit. They operate and repair various communication equipment, including radios, satellite systems, and other technologies to ensure reliable information flow. Additionally, they may train personnel in communication protocols and assist in planning and executing communication strategies during operations. Their role is crucial for effective command and control in military missions.
What is an invention that was made in between the years 1800 to 1900?
The invention of useable electricity, steel, and petroleum products during the 19th century lead to a second industrial revolution (1865-1900), that featured the growth of railways and steam ships, faster and wider means of communication, and inventions with names we all know today.
What are the essentials features of good communication system?
A good communication system must have clarity, ensuring messages are easily understood without ambiguity. It should facilitate timely exchanges, allowing for prompt responses and feedback. Additionally, it should be reliable, minimizing the risk of data loss or distortion during transmission. Lastly, adaptability is crucial, enabling the system to cater to various formats and channels to meet diverse communication needs.
Could infrared light be used between earth and satellites instead of microwaves?
Not really. You'd lose much more energy during the passage through the atmosphere with IR than with microwaves to make IR a really bad choice for Earth-Orbit communication. Besides, building IR receivers is far more expensive than building microwave receivers.
During what phase of mitosis does the spindle disperse?
The answer is telophase.
How does the phormium jester disperse seeds?
Animal Dispersal during consumption/excertion
How did brian Johnson discover microwaves?
Brian Johnson did not discover microwaves. Microwaves were discovered accidentally in 1945 by Percy Spencer, an American engineer working on radar equipment, when he noticed that a candy bar in his pocket had melted during a radar test.
Who had better ways of communication during the civil war?
The union had better communication. We had the telegraph that lincoln frequently used. Also we had trains that were amazing communication between the west and east of the United States
Where there radios during the Great Depression?
Yes, radios were one of the main sources of communication between the government and the people during the Great Depression
What advancement during Paleolithic age made communication between people easier?
the use of physical gestures
Is there a difference between heroes from ancient Greece and Maori heroes?
Of course there is. During the Greek antiquity there was no communication between Greece and New Zealand.
When did people start getting microwaves?
Microwaves first entered the consumer market in the late 1960s, becoming increasingly popular in households during the 1970s with the introduction of more affordable models.
Do they have microwaves on planes for heating up food during flights?
No, most commercial airplanes do not have microwaves for heating up food during flights. Flight attendants typically use ovens or hot water to heat up pre-packaged meals.
Emergency communication system during disaster?
mainly we can tell that the communication duiring disaster is very inevitable most probaly a radio-fm am could be the best of all also the use of satellite ensure good and quorate mode of communication in the times of a disaster
What F1 driver hears from his earphones during the race to they listen a music or will be there tottaly silence during the race?
No the headphones are only for communication between the driver and team.
