What is Dopplers Effects?

Due to a higher frequency, they tend to be bluish when stars come towards us. This led to the invention of the Hubble’s telescope in 1929. On the contrary, when Edwin Hubble used his telescope to prove the universe was expanding, he showed the reddishness of the color due to the decreasing of frequency or simply increasing of size.

THE FORMULA

Now there exists a formula to calculate the Doppler Effect or how much or how minor the frequency changes concerning the observer.

The formula is the summation of the velocity of sound waves and the observer’s velocity, which is then divided by the sum of the velocity of source and velocity of the waves multiplied by the actual frequency of the sound waves.

Observer frequency of sound:

      V+Vo  x fs

      V +Vs

V- Velocity of sound

Vo – observer velocity

Vo – source velocity

fs – Actual frequency of the sound waves

APPLICATIONS OF THE DOPPLER EFFECT IN OUR DAILY LIVES

•     MILITARY COMMUNICATION AND WARFARE

The principle of the Doppler Effect is heavily used for military and communication purposes. Submarines require it for navigation, analyzing objects, targeting and launching missiles. All these often require the use of frequency waves and that gives them an estimate of the distance of the target

A fun fact is that Dolphins use SONAR, which stands for sound and navigation ranging for communication. They emit high-pitched frequencies that travel long distances and help them communicate with each other.

• RADAR USES

The Doppler Effect is used to measure or detect the speeds of moving objects to calculate things like distance better. Over speeding vehicles are nabbed by the police using the speedo guns that work on this principle.

• MEDICAL USES

It is used extensively in estimating the blood flow in the veins and then depending on that, one can determine the strength of the cardiac tissue.

• ASTRONOMICAL USES

In this, the doppler effect is used to measure the speed of moving objects light-years away and see if or not they impact the Earth or threaten our satellites. If they do, their impacts can be calculated and then can be shot at accordingly.

DISADVANTAGES OF THE DOPPLER EFFECT

• The Doppler Effect fails to consider the resistance that the waves may be facing. It only finds the ideal or expected change as a result of the velocity of the objects. Things like wind high tide that impose a sort of friction are not considered.
• Weather conditions can severely hamper equipment and the readings or field data.
• Due to the sensitivity of the equipment, the RADAR tends to get quite steep. Moreover, there is a constant need for a well-skilled professional to administer its work.

CONCLUSION

It is undeniable that the Doppler Effect is one of the most straightforward yet most extensively used principles in almost all fields. It has applicability in many essential fields like medical, communication, Military, astronomy and many others. The Doppler Effect has led to major astronomical breakthroughs and is responsible for a lot of human progress in space.

However, we need to remember or anticipate the flaws or drawbacks of engaging with experiments involving the Doppler Effect as, along with the certain level of accuracy, there is ample scope for the disruption of the same