Physics - an intro to a new series

Why learn Physics? - The first thing that you need to know if you are new to it. This blog series is all about Physics - Mathematical, Mechanics, Electromagnetism, Nuclear, Relativity, Modern, Astro, Heat and Thermodynamics.

So why do I learn physics? - The answer looks simple. Let's start with some funny questions.

1. How do you see everything around you?

2. How do you listen to everything around you?

3. How do you breathe the air to stay alive?

4. How do you stay on the earth without clinging to it?

Many other questions can potentially help us understand physics. You might be wondering how those questions relate to physics? Let me just show you my perspective of the world after wearing the lens of Physics.

1. Seeing:

Can you see this beautiful picture? Yes, of course, you may answer. What's new to it or where's your physics lens? - These questions might pop up after this question. You might say that God has given me two beautiful eyes through which I can see this picture. But you know what, it's not just your eyes but it's physics that helps you see this beautiful picture.

Steps for seeing (hilarious right?):

1. Light from the sun (or maybe any light source) reaches the surface of the object you observe.

2. Then according to the principle of reflection, the light bounces off the surface of the object.

3. Then those light rays reach our eyes.

That's my point of view from my physics lens! You can also write down your point of views in the comments below. Let's get to the second question.

2. Listening:

Listen to this video (if you see the movements of the bird's beak it would be a bonus!) and let me know if you were unable to listen to it. I know you could listen to it but do you think there is physics involved in it?

Let's dive into the basics of listening from my physics lens.

Ears are useful to capture the sound from our surroundings.

Steps for Listening:

1. Sound is generated by the disturbance in the air created by the larynx in our vocal cord.

2. The disturbance propagates through the air in all directions surrounding the sound source.

3. The sound travelling in the form of disturbance reaches our ears.

4. The disturbance in the air pressures disturbs the eardrum which propagates to the brain in the form of electrical pulses.

5. The brain interprets the sound the way we listen.

Did you that you will not be able to hear your own voice in space because of the absence of air in space? - let me know in the comments below.

3. Breathing:

The air we breathe is essential for our survival. You might have seen this intensively during these times of COVID. So now, we know the importance of Breathing. But how does physics apply to such an unrelatable thing? Let's find out by understanding the mechanism of breathing.

Steps for breathing:

1. It is impossible to breathe without the diaphragm because the pressure inside our lungs and the atmospheric pressure is the same.

2. The diaphragm expands and contracts accordingly to create a difference in pressure inside our lungs and outside the body.

3. This change in pressure allows the air outside the body to be sucked in by our lungs and vice-versa.

The final answer about us clinging onto the Earth is sarcastic in the face of our daily problems but the force of gravity is strong enough to hold onto billions of people, the water, and almost everything around us. This gravity is the same thing responsible for the tides we see in our oceans, which keeps the distribution of nutrients in a homogeneous manner, which helps the ocean life to survive and thrive.

You might have got an idea of how those simple things run by the principles of physics. We won't be able to see or even you might not be able to read this post if it was not the phenomena of reflection. Also, you might have known the importance of pressure in the phenomenon of listening and breathing and in the paragraph, you might have understood how important the role gravity plays in our lives.

So, you see physics is useful even in those small looking yet the most important parts of our life. This was just an into how interesting physics can be if you try to think it in a different way. Don't worry, this series is dedicated to such interesting physics trivia which play an important role in our lives individually as well as on the large scales of stars and galaxies.

Tune in with me by signing onto the website and dropping down your chats with the chat button on the bottom right corner. See you on the next episode.

Stay happy, Stay Curious!