# The Universe and my questions

Note by Vinaya S
1 month ago

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.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. list
1. numbered
2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 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"
MathAppears 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} $\boxed{123}$

Sort by:

Light is fast because it has absolutely no mass. Then why does light bend near something of great mass(like a star)? It is because relativity describes gravity as a warp or twist or dent-like thing in space(and time) and if space bends, so can light.

- 4 weeks, 1 day ago

interesting, I never thought of that

- 3 weeks, 6 days ago

Are there parallel universes?

- 4 weeks, 1 day ago

ur guess is good as mine

- 3 weeks, 6 days ago

No, my friend actually unknowingly answered this for me, she said, “This universe exists, and parallel universes are opposites, and the opposite of existence is nonexistence, so parallel universes are not real.”

The multiverse could be real, though.

- 3 weeks, 5 days ago

Try out One Two Three... Infinity by George Gamov. May help loads :)

- 4 weeks, 1 day ago

okay!

- 3 weeks, 6 days ago

- 4 weeks, 1 day ago

thanks so much !

- 3 weeks, 6 days ago

How did we get so smart and become earth’s most capable species?

This a question I had and still can’t answer (helps in my belief in god)

- 4 weeks, 1 day ago

Exactly. The very existence of the universe demands a creator. :)

- 4 weeks, 1 day ago

I'm an atheist. I don't believe in gods. (Don't show this to the Olympians...lol)

- 4 weeks, 1 day ago

- 4 weeks, 1 day ago

Well, my dad irl also doesn't like that I'm an atheist lmao

- 4 weeks ago

haha sure

- 3 weeks, 6 days ago

how’s annabeth?

- 3 weeks, 6 days ago

I'm not sure I should discuss godly matters with you mortal. Sorry, but the oracle's new prophecy demands it. Bye.

- 3 weeks, 5 days ago

Hahahaha! Me? Mortal? Silly Percy.

- 3 days, 19 hours ago

## Do try out this book:

We Have No Idea -a guide to the unknown universe by Daniel Whiteson & George Cham.
This book includes funny illustrations that are sure to make you laugh and it explains basically everything from particles to the universe! :)

The two books I mentioned in this note helped me a lot with understanding things :)

- 3 weeks, 5 days ago

Here @Agent T :)

- 1 week, 2 days ago

Thanks @Jeff Giff :)

- 1 week, 2 days ago

The comment was getting thin, so I'm replying here @Sarah Alam

I have no idea about the random scream part, so I am not going to answer that. Yes, the stereotypes do exist, though they're not exactly 'stereotypes'. Here's the list -

Jocks - Sports people. Very into sports.

Preps - Rick kids, very socially aware, and also the 'bullies'.

Cool Kids - My gang. Cool jokesters kinda people. Everyone knows and loves them.

Then there's some middle cliques, like Floaters and stuff, but that usually doesn't exist much. Next is the lower cliques,

Nerds- Very, very smart.

Geeks - Anime or Manga fans

Emo/Goth/Loner - Quiet, don't get out much, always look dark.

Well, that's my high school. You'll see different people give different definitions for these, but this is how it is in our school.

- 3 weeks, 2 days ago

America is so different. In my school, we just have separation with classes. And there really isn’t that much more. I mean, almost everyone ‘hangs out’ with everyone. Some people stay with their close friends mostly, but it’s more mixed. Wow. I think I’d be a floater. And what you said about the preps as bullies, don’t the teachers give them detention? Because in what I’ve seen in movies, the bully never gets detention. Just the victim. Is that myth or material?

- 3 weeks, 1 day ago

Based on how much I know you, I'd say you'd be a Floater who would be accepted in the cool kid faction. Well, the detention thing depends on who the victim is. Usually the nerd and geek factions don't want trouble because there's only like 2-3 of them, since they aren't that socially outgoing. So when a prep or jock (jocks also bully) tangles with a nerd or geek, they usually don't go to teachers. The emo/goth/loner factions are a different case. They battle it out with the jocks or preps, due to which both the bully and victim get detention. Middle cliques and cool kids aren't usually messed with, because there's a lot of them, and because everyone loves them.

- 3 weeks, 1 day ago

I would love to see a prep/jock battle it out with a goth/emo/loner. By the way, Is that normally verbal or physical? Emotional... I doubt these types would know how to get into their opponent’s head and hit what is ‘close to home’.

Thanks for clarifying, I hope that you’re telling the truth, because I have heard the most ridiculous things online and from friends, like kinder eggs are illegal, but guns and rifles are perfectly fine. I now know that stereotypes are sort of real in the standard American schools.

- 3 weeks, 1 day ago

Trust me, you do not want to be anywhere near that kind of a battle. It's usually something verbal that provokes the other to start a physical fight. Emotional usually doesn't happen because that's one time when all the lower and middle cliques ally with each other. Nobody likes it when you hit close to home. I am telling the truth as far as my school is concerned. It really depends on the school/college also because there's some places none of this exists, some places that are wilder, some that are a bit mellowed down etc.

Yes, online rumors tend to be ridiculous, but the kinder egg and gun thing is true. You can get guns if you're above 18/21 (depends on type of gun) for defense. Kinder eggs don't pass the FDA rule about non-nutritive items so that's why they're banned.

- 3 weeks ago

Okay, I understand about the fight bit, and I guess it doesn’t make much sense about the kinder eggs and guns, but I get it. What does FDA stand for?

- 3 weeks ago

- 3 weeks ago

I could have. But I forgot that I’m not in the 1970s anymore. I mean, I’ve never been to the 70s, but I’m sure it was horrible.

- 2 weeks, 6 days ago

lol I can't imagine living before pc's were invented...

- 2 weeks, 5 days ago

I can. I’ve watched enough movies. And I’m sure I could describe it to you. So, it’s fine. ¯_(ツ)_/¯ I mean, if you lived before PCs were invented, you wouldn’t know what you were missing without them. All you’d have to do is do stuff manually. Searching (encyclopaedias), games (arcades... I think), and whatever else you could do. If you timetravelled, though... not a lot of young people would be able to survive. I think that’s gen z or millennials in America. And I mean survive in a metaphorical sense. I personally would survive barely by becoming rich by being a psychic from the future. Then I’d invent the phone early, and I’d become more rich. Then I’d create google, and Microsoft and Amazon, well... I’d hire the people who made those with my psychic wealth.

- 2 weeks, 5 days ago

I'd time travel back to the age of the first humans, give them a ps4 and come back, so that in the current time, gaming industry will have developed much more lol

- 2 weeks, 5 days ago

Well, they’d have to figure out what it was first, you’re really betting on the fact that they’d actually keep a machine from a stranger. And does time work that way? In Avengers: Endgame, they say that you’re not able to change your own timeline, just the others. For example, you go back in time and give your past self a million dollars/pounds. That does not change what is happening to you. Your ‘past self’ is probably going to be living a great life, but you’re life will not change. It’s like you gave the money to a completely different person. If you were to invent a time machine that can change this timeline, tell me.

- 2 weeks, 4 days ago

Time-travel sucks, period.

- 2 weeks, 3 days ago

True, but if you do invent time travel, please go to Stephen Hawking’s time travel party on June 28th, 2009. (Cambridge) He gave the invitations out after the party, to ensure they were real time-travellers. The me who is in that timeline will be so excited. Well, she’ll be excited when she learns about it.

- 2 weeks, 3 days ago

I ever see a time traveling device, I'm gonna kick it. I don't need complications in life lmao

- 2 weeks, 3 days ago

I do! Tell me where it is. I’ve always wanted to leave this life. I have been waiting to go on my quest for ages. I’m not going to give up my chance, even if I die doing it.

- 2 weeks, 2 days ago

Can we please go back to preps and jocks bullying lower cliques?

- 2 weeks, 2 days ago

Okay, if that’s what you want... what if a person was bullied all the time, and then made a time travel machine, and accidentally became his other self’s bully. That would be a great idea for a movie.

- 2 weeks, 2 days ago

What the ?!!?

- 2 weeks, 2 days ago

Mwah hah hah

- 2 weeks, 2 days ago

There are different kinds of time travel shown in sci fi movies and shows. Watch this video.

- 2 weeks, 2 days ago

Question: why is the human body so weird?

For example, we have an adrenaline rush, where our pain response just.... shuts off. There is also bones. They fuse together through childhood. Nobody thinks that’s weird? Our heart just goes on and on nonstop, until one day it stops. Our teeth fall out, and grow again. Our eyes can see a spectrum of colours, and the pupils grow and contract when we see light or darkness.

Then there is the question: why are humans so incredibly strange?

I mean, the Arctic exploration. People died of the cold and our solution was to send more people? Wtf?! We make antidotes made from the poison itself (I used to use stinging nettle leafs to heal my friends’ STINGING NETTLE burns in year one) We made a robot sing happy birthday on Mars, just because we could. We can eat all sorts of food that other species cannot. We found a way to make an instant painting of something by clicking a button. (Photos) i could go on, but I’d never finish.

Any thoughts?

- 3 weeks, 5 days ago

we have an adrenaline rush, where our pain response just.... shuts off

When you are the prey and not the predator, this comes handy

There is also bones. They fuse together through childhood

Maybe you want the whole skeletal system to be made of one bone?

Our teeth fall out, and grow again

You get a stronger set, one you couldn’t have previously due to a small mouth (trust me, I had my premolars removed, those roots were bigger than the crown itself, milk teeth didn’t even have any roots in comparison)

- 3 weeks, 5 days ago

It’s useful, but unusual.

- 3 weeks, 4 days ago

What do you think is usual then (and also please do mention to which question you have answered this too)

- 3 weeks, 4 days ago

I mean, I’m not sure a lot of animals have adrenaline rushes and when aliens come to visit, they're going to find bones fusing together unnormal. Teeth falling out isn’t that strange, but compared to aliens... I did realise that I didn’t specify that I was comparing this all to my idea of aliens or other life species on earth.

- 3 weeks, 4 days ago

I will be completely honest, I find thinking strange. Why think so much?!? Animals have the right idea, battle it out and the most powerful gets to be king. We humans are weird and stupid...

- 3 weeks, 4 days ago

Right? Animal thoughts: eat, sleep, fight Human thoughts: I wonder what this does... (reaches arm out and presses big, red button labelled DANGER) blows up in their face

- 3 weeks, 4 days ago

That should be the most trending meme on the internet lmao

- 3 weeks, 4 days ago

You don’t know whether aliens will think it’s strange we can’t detach our hands and legs, and a lot more things you will never able to think about

- 3 weeks, 4 days ago

Well, to be honest, I’ve created my own imaginary world down to the last detail. As in, I’ve made my own people in real life and I make them do stuff, like go to the shops and buy fifty kilos of bananas. In my alternate universe, humans are considered to have the strangest abilities in alien standards. For example: maybe the weather is too diverse on this planet for aliens.

- 3 weeks, 4 days ago

Well my imagination has to bow down to yours then (unless you are talking about something like minecraft)

- 3 weeks, 4 days ago

I’m talking about an alternate reality where I have managed to adapt my timeline (it goes back to the first century) to accommodate books I have read, stories I have made and movie plots in, so none of them really know about each other, except me, who has messed with their timeline and fixed plot holes. Everyone I know is still there, and if I really hate someone, I make a fictional character murder them in cold blood. technically, I am the puppet master, the people are my puppets and the universe is my stage. I’ve been making this since I was nine years old. And every story I think of and every show I watch has somehow earned itself a place in the world. I have also used history, like I gave historical characters backstories and stuff. All the monarchs are the same, and the victors of wars are the same, but I got into their weird secrets. I’m still changing the timeline, it’ll probably never stop. (I’m actually using two universes, one is where realistic happens, and the other is where Harry Potter, and Percy Jackson and the Hunger Games takes place.)

- 3 weeks, 4 days ago

Yo wait, I haven’t thought of this at all, really impressive, god that’s a nice hobby, I do make my own fiction in my head, but this level of fiction is unheard of

- 3 weeks, 4 days ago

You’re the only person I have told. Unless you’re a robot. I once made a story about robots and tech, where evil aliens try to wipe out humanity, but due to the humans bonding with the robots, the robots fight the evil aliens instead of the humans. I got this idea from a post online, but I went into depth. This takes place in 2062. What can I say? I’m a daydreamer. And most of my stories I create unintentionally, while I’m asleep. My dreams are interesting.

- 3 weeks, 4 days ago

- 3 weeks, 4 days ago

My dreams, which I can remember, are most of the time facing my worst fears type, definitely interesting, not so interesting when you are in them

- 3 weeks, 4 days ago

I don’t know my worst fear. I don’t even know whether I’m afraid of certain things, just wary around them, or disgusted by them.

- 3 weeks, 3 days ago

When I was 8 I once made a story where my friends and I were superheroes, and we beat up the bad guys (aka people I didn't like) with our sick powers.

- 3 weeks, 4 days ago

When I was eight, I made a story about a prince going to save a fire bird to inherit the kingdom. His father would only step down if he got the princess from the neighbouring kingdom to marry him, to be the prince’s queen and the princess’ father would only give his permission for the marriage if he got a really rare plant from the other kingdom, and the prince tried to steal it, but he was caught and the king there said he would give the plant if he got the fire bird from the cage at the top of a mountain. The prince had to go through a forest, across the sea and up the mountain to get the bird. I remember this because I wrote it down with terrible drawings in a paper book which I made. Yeah, I made complicated stories.

- 3 weeks, 3 days ago

I made a story where I was literally god and I smited all the people who got more marks than me in exams. You could say I was childish lmao

- 3 weeks, 3 days ago

You should have smited the teachers who gave those kids higher marks than you.

I actually have a question. Is public school in America really as wild as it seems online? Do you actually hear random screams in classes and wonder what’s going on? Do you have stereotypes (jock, prep)? Or is this some ridiculous idea someone made up?

That was three questions.

- 3 weeks, 2 days ago

The image of what we are seeing is formed on the retina and we perceive the colour and intensity of light with the help of rods and cones which are present on the retina(rods perceive light and cones perceive colour). If the rods think that the light is less(or more), they send signal to the brain through nerve fibre(which is made of many neurons). Then the brain sends signal to the smooth muscle fibres in the iris(they surround the pupil) and the pupil expands(or contracts).

- 2 weeks, 3 days ago

“why is billie eillish’s voice so good?”

Did nobody else notice this?

- 3 weeks, 1 day ago

For ‘learning purposes’, I will make the real explanation and a weird explanation.

Real:

She’s a witch in disguise and has taken a potion to make her voice better. It’s not actually singing. She’s hypnotising us. I’m the only one who knows, and she’s coming to get me. Tell who you know and we can save ourselves. The first stage is over: gain fans. The next stage is beginning. She coming.

Weird:

She has been training her voice to fit specific keys and make the sound of her voice follow the tune of the song. Or she uses auto-tune. Both make no sense.

- 3 weeks, 1 day ago

ooo. I get it now

- 1 week, 2 days ago

DUH

lmao

- 3 weeks ago

once a demigod, always a demigod

- 1 week, 2 days ago

Do ‘Bosom stars(as large as galaxies)’, a new pending possibility of dark matter, exist?

- 2 weeks, 2 days ago

NO MORE TIME TRAVEL!!!!!!!!!!!!!!!!!!! @Sarah Alam

☠☠☠☠☠

- 2 weeks, 2 days ago

Okay, do you want to hear about aliens?

- 2 weeks, 2 days ago

y u bully me?

- 2 weeks, 2 days ago

What?

- 2 weeks, 2 days ago

It's a meme. You keep talking about stuff we don't know about so I am getting exhausted listening lol

- 2 weeks, 2 days ago

Pls talk about preps and jocks and games and fun (the only things I understand)

- 2 weeks, 2 days ago

Ever played Monopoly?

- 2 weeks, 2 days ago

Yup. Cheaters Edition. Gives me high stress every time I cheat lmao

- 2 weeks, 2 days ago

I hate Pentonville Road. Every time I get it people cheat me lol

- 2 weeks, 2 days ago

Pentonville Road is the light blue one, right? On my monopoly board, (I play the normal and sometimes the anti-Monopoly) the places are British. Monopoly is American. Why don’t you play it with the American places? Isn’t that the original?

- 2 weeks, 2 days ago

What I meant was I have the British one, because I live in the UK. Don’t you live in America?

- 2 weeks, 2 days ago

Yes, but I have the British one because I like it. K, gtg bye.

- 2 weeks, 2 days ago

Bye

- 2 weeks, 2 days ago

I prefer British ones. Okay, gotta go, bye.

- 2 weeks, 2 days ago

Bye

- 2 weeks, 2 days ago

Have u ever wondered that

1)how can a collection of non living stuff form a living being ?

2.If we zoomed in a cell then we will find nothing but quantum fluctuations in space.Does it mean we are nothing but a massive collection of fluctuations in space giving an illusion of something?

3.About the universe which is yet not explored? And about the undiscovered species in the Pacific Ocean(maybe megaladons are still alive)?

4.Original and my personal fav one: how whatever we are seeing is incomplete because there exists a lot of other dimensions and maybe we don't look like what we think in other dimensions.sad?

5.Even if our whole universe is destroyed ,nobody will give a damn and we are just running an endless race of nothingness and are still having hope on ourselves?lol?

6.not orginal: how can everything has a wave particle duality?

7.What is actually mass and charge how can we calculate it without a reference?

8.Why magnets have two poles even if we break them apart and does the same happen on a microscopic level as well?why?

9.If electrons are nothing but waves then how can we say that hydrogen has an atomic no.of 1 and titanium 22?how was the atomic no. calculated at the first place?

10.why do ppl get depressed when they can just get a dopamine shot and be fine? Why has nobody ever think of it?

- 1 week, 2 days ago

I read this in a book: since physicists find no reason for different basic particles like electrons to weigh different, they created the Higgs Boson, which creates a mass field. Since different particles interact with the field differently, it creates mass. This is the ‘inertia mass definition’.

- 1 week, 2 days ago

Ohh it's interesting!

Yeah ,I have heard about Higgs boson too but I don't know much about it:) a lot to discover yet. sigh!

- 1 week, 2 days ago

Of course terms may not be precise because I had to translate it :P

- 1 week, 2 days ago

I got the essence though:)

- 1 week, 2 days ago

It’s from the book We have No Idea. I wrote it in a comment here :)

- 1 week, 2 days ago

CoOoOOOoOlll I'll check it out:D

- 1 week, 2 days ago

These are based on my research on the topic out of curiosity(which is not yet satisfied)

#a layperson's attempt :P

1.A tear in space time ,where the gravitational force is very(♾️)strong .

2.They are regions of spacetime [end of thinking capacity].

3.Universe is a collection of galaxies and celestial bodies. A multiverse is a collection of manyyy such universes.

4.No, we are not AlOnE!

5.We are not the earth's most capable species ,we are not superior than others. We are just too mean to treat our brothers and sisters like that and take advantage of their mutism (sorry but it's the harsh reality of our ancestors)..

6.Honestly,I do not believe in the physical God . I'm not against anyone's beliefs or smthin, it's just that my opinion towards that specific topic is a bit different from others'. Anyways, it totally depends on ur take on the topic, believe what you think is true :)

7.Wormholes are like a tunnel created in space time so that one can reach places in no time.And don't get too excited because they are still purely theoretical(can't say anything about future tho). aren't they CoOoOOOoOlll

8.Nobody has yet practically made it, it's just a theoretical idea (u've probably watched a Kurzgesagt video about it ;).

9.I'm nobody to tell this but a bit that I know is , it is an attractive force (not sure how it works on a microscopic level, a lot to discover yet)

10.idk much about light ,it always makes me lose my sanity. It's weirdly interesting tbh.🥴

11.energy is energy (oops?) It can be think of as a feeling like can you define love or hate?

12.For harnessing energy it will require much more energy. And u know what, u just thought of making us robots ...no fluid means no emotions :((〒﹏〒).

14.because our bodies have an expiry date:P

15.Dying is umm..okay lemme explain, we stop functioning when our heart stops beating ryt? Whatt is the relation of heart beating and being alive then? Heart beating helps in the dissolution of oxygen in blood and removal of CO2 and water, the oxygen is then utilised to produce energy which is how we are able to perform tasks(live). So when our heart stops beating, the energy production doesn't take place and as a result we die.

16.I don't know! For me, everything is still nothing, everything is a mere illusion.

17.I don't know, our human minds are not capable of thinking to that level, u must have heard of the 10% theory, it's actually true... we use approximately just 10% of our intelligence:/ maybe we can figure things like this out with 49%?who knows¯\(ツ)

18.quantum means tiny but fixed quantity.Btw did u mean quantum mechanics?

19.I don't know, I wanna know too :)

- 1 week, 2 days ago

gosh, ur like the answering machine. Thanks so much

- 1 week, 2 days ago

It was a pleasure ,fellow questioner :)

- 1 week, 2 days ago