The speed of light – part 1

When Galileo first set out to measure light’s motion, it wasn’t even clear if light did involve motion. And despite his experiments pointing the other way, the genius of Galileo rounded up to conclude that light travels with a finite speed. Here’s the saga of how Galileo tried his best to unveil the true nature of light.

Projectile motion

From your car keys tossed across the room to missiles launched across the world, projectiles are everywhere. We study the physics driving them.

The electric current

Electric current is all around us, powering nearly every tool we use in our daily life. We explain what electric current is and set the stage for further studies in electronics.

The Michelson interferometer – the heart of LIGO

The Michelson interferometer is what rests in the heart of LIGO, that detected the gravitational waves for the first time. Here’s how it works.

LIGO detects gravitational waves

LIGO made the first direct detection of gravitational waves. What is LIGO, how does it work, what are gravitational waves, why does this matter? We explain.

The Drude theory of metals

We overview the Drude theory of metals and its postulates, while setting the stage for its detailed explorations of certain important physical phenomena.

Defining simple harmonic motion

The simple harmonic motion is described here, in all its simplicity, with the use of geometrical constructs as visual aids, for your easier understanding.

Report: Prof. Mallesh’s talk on QFT

Prof. K. S. Mallesh from the Mysore University gives an enlightening talk on QFT, showing that you, me and everything around is all but fields interacting.

Report: Prof. Hari Dass makes light coherence coherent

Prof. N. D. Hari Dass from TIFR-TCIS, in a very brief seminar, explains the heart of the meaning of light coherence, and its consequences on the HBT effect.

Is Another Gas Giant Lurking in the Outer Solar System?

A new gas giant with an orbit thirty times larger than Pluto’s may be orbiting our Sun. It may also explain observed anomalies in the Kuiper belt.

The mass-spring system – Part 3

Here we seek to solve the equations of a mass-spring system in order to figure out the positions of the mass at different times during its harmonic motion.

The first law of thermodynamics

What is the first law of thermodynamics, how is it stated mathematically, what does it mean and what are its implications? We discuss these and more.

The mass-spring system – Part 2

Here we analyze the entertaining motion of the mass in a mass-spring system and write down the corresponding equations making use of certain approximations.

The mass-spring system – Part 1

There are a number of assumptions made when speaking of a simple mass-spring system. We explain in detail, with analogies, each of these assumptions, here.

Paths of charged particles in magnetic fields

Keeping track of directions of fields and forces can be confusing when perceiving charge-motions in magnetic fields. We explain the idea here, in simple terms.

The Lorentz force law – magnetic forces

We observe the behavior of moving charges in magnetic fields and find a simple law connecting the directions of fields, charge-motions and magnetic forces.

The travelling pulse

The description of a travelling pulse is a tricky one. The very motion of the pulse makes it hard to track it. Here we break down the idea in to simple terms.

The origin of magnetic fields

Usually we simply assume the presence of magnetic fields around electric currents and proceed farther. But here we stop to analyze the fields’ very origin.

The photoelectric effect

The introduction of the photon-concept was essentially to explain the photoelectric effect. Here we explore the effect and the conditions essential for it.

Simple harmonic motion – Examples

Here we apply the concepts we’ve learnt earlier, to phenomena around us, realizing the overwhelming presence of the simple harmonic motion all around us.

Simple harmonic motion

Here we describe the simple harmonic motion in a very simple way using simple examples to get you comfortable with the rudiments of oscillatory motions.

The zeroth law of thermodynamics and basic definitions

A thorough, lightweight introduction to the basic concepts along with an overview of the universal zeroth law of thermodynamics.

Report: IIAP physicists on space science today

Three-day workshop discusses everything from the Sun to citizen science to you and me and the edge of the universe.

The magnetic fields

The concept of the magnetic fields gives us an excellent aid to intuitively understand the intrinsic working of nature. Here we explain this useful concept.

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