Swapnil's Message board- III

Hi!

Due to excess comments in the last messageboard, I thought of posting the third version of it. Feel free to ask me questions or talk to me about any random topic. I would be happy if you discuss mathematics problems with me.

Regards,

Swapnil Das.

Easy Math Editor

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.
Stay on topic — we're all here to learn more about math and science, not to hear about your favorite get-rich-quick scheme or current world events.

Markdown	Appears as
`italics` or `_italics_`	italics
`bold` or `__bold__`	bold
- bulleted - list	bulleted list
1. numbered 2. list	numbered list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1 paragraph 2	paragraph 1 paragraph 2
`[example link](https://brilliant.org)`	example link
`> This is a quote`	This is a quote
# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"	# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"

Math	Appears as
Remember to wrap math in `$` ... `$` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$

Comments

Do you like Pigeons?

Nihar Mahajan - 5 years, 5 months ago

Lol no.

Swapnil Das - 5 years, 5 months ago

Why? They are so simple and soft...

Nihar Mahajan - 5 years, 5 months ago

@Nihar Mahajan – They had done something strange on my head :P

Swapnil Das - 5 years, 5 months ago

@aryan goyat

If you get time, please share the InPhO paper. Thanks.

Swapnil Das - 4 years, 4 months ago

https://brilliant.org/problems/maximum-energy/?ref_id=1322810\

@shubham dhull

Could the master provide a solution?

Swapnil Das - 4 years, 4 months ago

(https://brilliant.org/problems/maximum-energy/?ref_id=1322810)[Link]

Swapnil Das - 4 years, 4 months ago

i'm no master :p the q is a little hint: tricky think in the terms of relative motion

A Former Brilliant Member - 4 years, 4 months ago

I'm currently studying Algebra and Number theory. Can anyone suggest books for them?

Swapnil Das - 5 years, 5 months ago

So, allow me to launch a topic for discussion, a number theory problem. This was the problem I had doubt in, but was unfortunately unable to get a nice solution. Can anyone provide one?

Swapnil Das - 5 years, 5 months ago

@Matt DeCross Would you do like to post some problems on thermodynamics? It shall be greatly appreciated, Thanks!

Swapnil Das - 5 years, 3 months ago

@Jon Haussmann

What if I add the condition : If $xyz=1$ to the problem? Will the answer be correct then?

Swapnil Das - 5 years, 2 months ago

@Otto Bretscher Happy Birthday!

Swapnil Das - 5 years, 2 months ago

@Otto Bretscher Heppy Bday comrade!

Nihar Mahajan - 5 years, 2 months ago

Did you know that he had is B'day?

Swapnil Das - 5 years, 2 months ago

@Swapnil Das –

Nihar Mahajan - 5 years, 2 months ago

Thanks, but it's not my birthday, actually ;)

Otto Bretscher - 5 years, 2 months ago

LOL, I suddenly I saw a change in your profile to 60. When is your B'day? I want to wish you.

Swapnil Das - 5 years, 2 months ago

@Swapnil Das – That change happened a few month ago, on January 27 ;) I usually spend my b-days with the Compañeros in Cuba, but this year, for the special occasion, we went to Alhambra, Granada, Al-Andalus, the most magnificent complex of buildings I have ever seen.

Otto Bretscher - 5 years, 2 months ago

@Otto Bretscher – Aww, I missed it :(

Swapnil Das - 5 years, 2 months ago

@Swapnil Das – Better late than never; I appreciate the thought. I can't wait to receive your message next year, in Havana, Cuba. What about your own b-day, Comrade?

Otto Bretscher - 5 years, 2 months ago

@Otto Bretscher – I am born on the 5th of December, it was very kind of you to ask me, Sir :)

Swapnil Das - 5 years, 2 months ago

I would really appreciate if you reply to this very question of mine. - Do photons possess mass?

It might be that they don't have rest mass, but have relativistic mass. Or do they don't have both?

@Michael Mendrin

Swapnil Das - 4 years, 11 months ago

There was a time when physicists weren't sure if neutrinos had mass. Now not only we know they do, we know that neutrinos have "oscillating" mass, i.e., can vary over time, not related to relativistic effects. Unlike neutrinos, however, photons are still considered to be true massless particles. There are very few "true massless particles", the other two being the gluon and the graviton. All three are gauge bosons, respectively of the electromagnetic, strong force, and gravitational forces. Because they have no rest mass, they always travel at the speed of light in free space. All other particles that have a rest mass can be found to be traveling at considerably less than speed of light in free space.

Physics experiments have been done where light travels very slowly, but not in free space.

Michael Mendrin - 4 years, 11 months ago

Thanks a lot!

Swapnil Das - 4 years, 11 months ago

@Pranshu Gaba Which branch did you take at the IISc?

Swapnil Das - 4 years, 10 months ago

There is just one branch in IISc for the first three semesters (1.5 years) in the undergraduate program. We have six courses for the each of the first three semesters: Physics, Chemistry, Biology, Mathematics, Engineering and Humanities. After three semesters, we will choose one of these subjects as a major and one subject as a minor.

Pranshu Gaba - 4 years, 10 months ago

What are you plans? What will you take?

Swapnil Das - 4 years, 10 months ago

@Swapnil Das – Right now, I think I will take either Maths or Physics as major and biology as minor. However, I still have a lot of time to decide, and my preference changes very frequently. I have no idea what i'll end up taking.

Pranshu Gaba - 4 years, 10 months ago

@Otto Bretscher

Happy advanced B'day, Sir!

Swapnil Das - 4 years, 4 months ago

@Calvin Lin

Kindly delete the following accounts, as they do not serve any particular purpose: