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Electricity and Magnetism

Electricity and Magnetism, Two seemingly different topics ( atleast till grade 9) are actually just two different faces of a coin, one is related to the other, one instigates the other.  Taught to high schoolers in vast detail, it carries as much importance in our report cards as it does in our real life ( Now, imagine living your life without TV or your laptop , these devices use both magnetism and electricity! That is the percentage of  importance it plays in our report cards too ( *gulp*)) Hence, in this blog we will go through the important formulas, units and concepts in these chapters  So, let's start!    Important units and formulas 1) Electric charge -- Coloumb                               -- CGS Unit - Electrostatic unit (esu) ( 1 Coloumb = 3 * 10⁹ esu)                               -- Faraday ...

Total Internal Reflection

 Have you ever experienced this? When you are out walking on the footpath, and  you feel your hair is not proper but don't have a mirror, You look onto the glass windows of a car parked nearby and see yourself ." Oh this could work as a mirror too" and start correcting your messy hair, when suddenly the person inside the car rolls down the window and smiles. That embarrasing laugh you gave back ?  Or when you walk across shops or cafes with glass panes and at times you see yourself in them?  or the mesmerizing feeling when you see a diamond sparkle effortlessly?  In the first 2 examples, We know that these windows and glass panes are transparent, which is they should refract the light and let it pass through them, But how are they reflecting them back??  Due to the phenomena called TOTAL INTERNAL REFLECTION!  To understand this concept , Let's take an example of a glass slab, the light getting refracted through it's second surface, Like this ๐Ÿ‘‡ Now, If...

Apparent and Actual Depth__ Further more on Refraction of Light

 27th March 2013 , Wednesday The Sun was bright and the day was blithesome. My Friends and I were splashing coloured water and throwing rainbow coloured powder everywhere , celebrating the radiant festival of Holi. After drowning eachother and pranking most of the adults by throwing coloured powders at them unexpectedly. We decided to spend the rest of the day in the pool, The bright sky, hot weather and fun in the air, made it perfect. We grabbed our towels and excitedly ran towards the pool, all the while getthing chided by the housekeeping aunty for making the once pristine corridor, into a form of abstract art drawn using our feet and the unsettled powder falling of our hair. As soon as we reached everyone jumped into the pool, doing cannonballs and splashing water all over. I quietly went and sat on the edge of the pool, making patterns in the water using my legs for I didn't know how to swim. My friend called out " What are you doing? Come in!" "I don't kno...

More about Refraction of Light through a Rectangular Glass_ Proofs of some basic properties and Factors affecting Refraction

  Go straight, Turn Left, Slight Right and straight again. Finally, you have reached! Welcome! Welcome to the World of Light once again!  I do hope you really enjoyed your previous visit into our mindboggling world. Today we are going to dive deeper in to our renowned town of refraction which is one of the main places scientists choose for adventure sports in our World. Strap in and get ready for the roller coaster ride as we go through the peculiar effects of a glass slab and different mediums on light. (If you haven't read the previous blog about the Basics of Refraction of Light and Snell's Law, click on this link !  The Refractive Indices of Light and its relation with the Snell's Law  . I would suggest you to read that , before you move ahead in this blog as we will be referring to few concepts from it.)   In this blog we will understand why:- Q) The   Angle of Incidence always equal to the Angle of Emergence  in a glass slab? Q) The Incident...

The Refractive Indices of Light and its relation with the Snell's Law

Light is both a particle and wave, it doesn't have mass but still interacts with other matter. These are few of the confused and oxymoronic statments you might be coming across in your Physics textbook.  The thing which makes everything visible is mostly invisible. (No, It's not crazy ... It's Physics๐Ÿ˜) Light is an entity , which is responsible for our existence, You literally won't be able to read this blog without this entity of physics. No wonder why physicist  like Einstein and Newton spent majority of their life trying to study this incredible phenomena.      In this blog, we will try  discussing about one of the properties of light out of the thousands discovered throught out human civilisation --- Light through different medium ... Light travels in a straight line,  In the Rectilinear Propoagation of light, we learnt that light travels in a straight line (basically propogates rectilinearly) , hence we get sharp shadows of images, but this is t...

Why is -v/u = Magnification of Spherical Mirror? ____Proof of Magnification formula

Magnification of mirror = Most high schoolers, know this formula byheart. Seeing this formula might take you back to your memories of all the  panic attacks you had just before the board exams trying to remember this formula amongst the various other concepts learnt in the Light - Reflection and Refraction chapter (Yes, been there  ๐Ÿ˜Œ)   This formula was and is  very important, both for the boards and real life applications of optical physics. So we all know this formula byheart , Which is, we just know that m = -v/u, but do you know why they are equal?  But, first to all those who are wondering What is Magnification!? Magnification is the ratio of the height of the image and height of the object, basically telling us how large or small the image is from the object The common formula this is denoted by is - height of image / height of object  so this is (somehow) related to -v/u ... In this blog we will dive deeper into this "somehow"  First let u...