Talks of Chamodh

Today I came across the question below. I thought to write about it explaining how to find the total distance traveled by a bouncing object. Photo by cottonbro: Question: A particle falls from h height and bounces. Prove that the total distance traveled is $\frac{\left ( 1+e^{2} \right )}{\left ( 1-e^{2} \right )}h$. and the total time is $\sqrt{\frac{2h}{g}} \cdot  \frac{(1+e)}{1-e}$ where e is the elasticity coefficient. we can find the particle's velocity when it hits the ground for the first time using the law of mechanical energy conservation as shown below. $mgh = \frac{1}{2}mv^{2}$ $\Rightarrow v = \sqrt{2gh}$ and we can use Newton's law to find out the velocity (v) of the particle when it bounces for the first time.   $e = \frac{v}{\sqrt{2gh}}$ $\Rightarrow v = e\sqrt{2gh}$ According to this, we can determine the particle's speeds when it hits the ground are in a geometric series as follows. $e\sqrt{2gh}, e^{2}\sqrt{2gh}, e^3\sqrt{2gh},....$ The n ...

Photo by Stefan Stefancik Everyone who has studied physics in high school knows the doppler effect. For those who don't, the doppler effect is an effect when there is a relative motion between a source of a wave and an observer. As a result of this relative motion, the wave's frequency differs from the actual frequency (f). This is called the Doppler Effect and the observed frequency(f') can be calculated using the following basic equations. Where  V is the speed of the wave in the medium;   Vo is the speed of the observer   Vs is the speed of the source   Now it's time to get into the topic. Some people think that we experience the doppler effect when a source reaches us or leaves us at a constant speed. For instance, they think the change in the sound we experience when a train comes toward us is a result of the doppler effect. This is a half-truth.  According to the above basic formula, we can derive a new formula to calculate the observed frequency of the tr...

Photo by Alexander Grey: https://www.pexels.com/photo/person-with-body-painting-1209843/   As all we know, our world is full of colors. What is your favorite color? My favorite one is Green. I don't know why but I really like green. Let me know yours in the comment section. However, this post is not about our favorite colors, from childhood I wondered, what color is and how color is made. As I grew, I realized we see colors as a result of reflection. I'm pretty sure that everyone who reads this knows it very well. When light is collapsed with an atom, the atom absorbs specific energy. it doesn't absorb every radiation that carries different energy levels. For instance, imagine that there is an atom that absorbs every absorbs every energy level but without the radiation of 450 nm wavelength. So, only that radiation comes to our eyes and we are able to see the blue color. That is how we see an object in blue.   But my question is, what if we provide all the other radiations...