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Questions tagged [science]

Puzzles which require some knowledge of science to solve. Consider using the 'physics', 'chemistry' or 'computer-science' tags if your question is specifically about these branches of science.

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84
votes
25answers
23k views

How do you prove that mirrors aren't parallel universes?

Migrated from WorldBuilding SE $:)$ "Each mirror is a world of it's own," Joe explains. "Joe, that's bulls***! Mirrors are just mirrors!" Rita proclaims. Joe proceeds to lay out the following~ $10~...
33
votes
2answers
3k views

The Alien Message: What does it mean?

"Three hours ago, we received a urgent message from one of our exploration agents. I'm just going to play it for you in full." "I'm on Planet 193843. I've found a large stone block, 2.64 meters high, ...
27
votes
3answers
1k views

Sculptures in a park

Edit: all the unhelpful clues, including bad hinting and misleading ASCII art, were removed and other, (hopefully) more sensible ones were added. You just moved to a new city, and your childhood ...
26
votes
4answers
2k views

This image contains a “Great Discovery”

The Puzzle: Source material taken from here As discussed on Numberphile, here is John Herschel's doodle, sent to his friend Charles Babbage. John H. John Herschel was an English polymath, ...
21
votes
4answers
4k views

I consist of three things. What am I?

I am made up of 3 things, of which 2 things are same. I have a total of 10 something inside me. If you see me properly, I am a palindrome. What am I?
20
votes
10answers
2k views

A Mythical Member of the Scientific Community

I've provided the link between man and machine. In rivers and trees, respectively, I can be seen. I've been key in measuring the speed of light. The Pacific Ocean is where I developed flight. ...
19
votes
1answer
2k views

The Pitiable Coder

One day, I found an odd newspaper lying on a bench called '$\large\bf\text{The Pitiable Coder}$'. I opened it and to my delight found an entire page on puzzles! Most were easy, but there was one I ...
19
votes
1answer
442 views

Inner and outer space

An entry into Fortnightly Topic Challenge #41 : Short and Sweet. On aliens and mediums, the mathematician _______ said, 'There is __ _____ and __ __', __ scientific view did not accept them....
17
votes
8answers
4k views

Infinite precision

The man tells you, "To enter the door of infinite precision, you must complete all of these tasks perfectly: Hold in front of me a baby that is exactly two days old. Bring me a metal object that ...
17
votes
3answers
1k views

My two favorite scientists

Who are my two favorite scientists ?
17
votes
1answer
753 views

A girl and a guy

The main goal here is to figure out the one-“word” answer to each of the following clues. Each answer consists of one (or more) names and one (or more) other words hinted at by the clues. There is,...
16
votes
1answer
287 views

A troubling doubling

The answers to all the clues below are rhyming doublets. (Except there is one rhyming triplet, which is marked.) So if I say: Hirsuite stone fruit you reply: Or if I say: Friendly—but not ...
15
votes
4answers
2k views

Lifting is my best known work

Virtuous, but I'm of no form My seat's right at the very top Where gangs of many is the norm My one peer is one that goes 'pop' Though my uses are many Lifting is my best known work ...
15
votes
10answers
2k views

Two many rainbows?

Wish I’d had a camera at the time but a cartoon will have to suffice, representing two actual incomplete rainbows that stop in midair where they meet, lit only by a setting sun. This seemed so ...
15
votes
1answer
2k views

I sleep with the stars - What am I?

I sleep with the stars, I could land in your bed, I can move square to square, I'm a ____________.
14
votes
9answers
4k views

What are my friends' names? (A visual puzzle)

While messing around at one evening, I made six small drawings, one for each friend of mine. My drawings were made to be very specific: Taking the action or object represented in any of them, you can ...
14
votes
5answers
594 views

Who are we? The pure ones

We are not the wonders, though we were created by man We are not the dwarfs, for our names are not proper We are not the days, though they each contain one of our own We are not the sins, for ...
14
votes
12answers
3k views

The know-it-all twins

A competent logician is walking down an unfamiliar road to reach his home, until he reaches a fork. Stood by each of the routes is a twin, who both look identical to each other. He has been warned of ...
14
votes
3answers
585 views

How to ruin the environment!

This morning, I woke up and found this strange note that someone must have slid under my door. It's all very confusing to me... Do you know what any of it means? How to ruin the environment! ...
14
votes
1answer
407 views

The summer term exams must go on

The staff at Farthingbottom School are in a bit of a fix: the summer term exams are due to start soon, but the exam papers haven't arrived yet. Dr Linnaeus (the Head of Biology) takes care of ...
13
votes
1answer
636 views

A Co rious message

sega srmo bryp druc omom ogaz nbrz rcoa gzrb rcdg arur hgag ecoc updn brus b--- - indicates the end of the message. What is this message trying to tell me? Also ...
13
votes
2answers
2k views

Why do these apples have no nutritional value?

These apples have no nutritional value. Why?
13
votes
1answer
1k views

I'm not a fan of hedgehogs

Many have tried to beat me, many have failed. The earliest to succeed, is long-tailed. If you break me, silence is all you'll hear. The thunder will make the others fear. Others will ...
13
votes
2answers
1k views

Mad Scientist Murdered!

Been a while since I've been on the site, I like what you guys have done with the place! Returned to find that the fortnightly topic was Science, one that I had suggested, so I couldn't resist ...
12
votes
5answers
4k views

Hard 4x6 chocolate bar Riddle

You have the following 4x6 chocolate bar. The question is what is the least amount of cuts you have to do in order to create 24 pieces of 1x1 chocolates. the cuts can have any shape they want as long ...
12
votes
4answers
758 views

What is my teacher's favourite animal?

My school teacher, has asked the above question in the spirit of Science Fortnight. However, he has only left the following on the whiteboard: Clue 1: 8, 6, 7, 9, 5, 6, 8, 6, 8, 4, _. Clue 2: ...
12
votes
6answers
793 views

Science related rebus wordplay, what is it?

Can anyone figure out what this rebus wordplay is? Doing a Google search will help you a lot, and is recommended, but reverse image search would be doing basically all the detective work for you, so ...
12
votes
1answer
310 views

Is it simple Math or something else?

Grandpa with his mischievous smile said: "If zero belongs to One And two belongs to Four Twenty seven belongs to Seven Then what belongs to Three?" Hint When I could not guess, I ...
12
votes
1answer
437 views

Feeding Units of Fish to Fussy Toffs

Farthingbottom School is an elite establishment catering for the educational needs of an international group of students from noteworthy families. They have had complaints from some parents that the ...
11
votes
1answer
4k views

My friend's snake will make me rich. Where should I take it?

My friend's talking snake came to me and asked: "Do you want to get rich?" I said "Yes." Then it told me "I know a place, if you take me there, I will rob from there for you." I asked "Where is that ...
11
votes
3answers
604 views

A puzzle inspired by “Cryptobiology? Biocryptology?”

This puzzle is a "look-alike" of the puzzle Cryptobiology? Biocryptology? but is different at its core. I was convinced that the other puzzle was trying to go in one direction, but after fruitlessly ...
11
votes
2answers
279 views

Capitalization matters in physics

A physics teacher saw the following in a student's work: $f=\mu n$ $Pa=\frac{n}{m^2}$ $T=\frac{n}{am}$ The teacher realized the student's capitalization was correct. What are these ...
10
votes
3answers
663 views

Cryptobiology? Biocryptology?

I have a friend who is a self-proclaimed cryptobiologist. Okay, maybe I don't, but if I did, I like to think she would have presented me with this puzzle: Find the hidden message: 441344•...
10
votes
4answers
2k views

Where does the emperor sit and why the earplugs?

The Emperor is annoyed that the crowd routinely chant out of step at the Empire's largest circular amphitheatre. For example, they are supposed to shout phrases in unison such as "Hail to the Emperor, ...
8
votes
3answers
553 views

What on earth I am talking about?

When they told me to move away, I told I have no charge left . When they told me to curl around them, I told them to increase the intensity in the field . When I told him to curl, he was big zero . ...
8
votes
9answers
1k views

Do exactly what I say! [closed]

Inspired by Infinite Precision No, I'm not picky, I just want things done exactly right. Complete 5 of these tasks (tell me how you would do them) and I will give you exactly 25 bragging points. I ...
8
votes
2answers
2k views

45x45 Word Search

You'll need to be a serious fan of these puzzles to find over 300 of the things hidden in this jumble. There are no clues as this is test of knowledge as well as determination. Once you get started it'...
8
votes
4answers
454 views

Guessing is a four-letter word

This is my first riddle here — I hope it's not too easy. I killed my brother a long time ago, And if I'm right, running fast won't help you. My relatives are weaker, shorter; But I ...
8
votes
6answers
587 views

Bongardium Leviosa

This was insprired by this puzzle. This follows the rules of a classic Bongard puzzle: find the rule that all shapes on the left follow, but none of the shapes on the right do. To make my intention ...
7
votes
3answers
813 views

Science riddle: Many of I

By my extreme size, I escape your eye The nature of every thing, is but many of I Since my unveiling, the inexact came by And there came a new discipline to unify What am I? The explanation ...
7
votes
4answers
938 views

Nerd on the Loose I - WHEN

Chat. I've created a chat room in case anyone wish to discuss this further. Preface. This is the first time I'm creating a puzzle. Since I find enjoyment in science and technology, the series of ...
7
votes
3answers
1k views

Go further out, I'm everywhere. What am I?

If you look about You will find me rare Try go farther out Then I'm everywhere Dare you anger me you shall die in flare Ignorant, ancients be the pharaoh's but my heir What am I?
7
votes
2answers
334 views

Where the water is hotter

There are two perfectly identical boilers containing the same amount of water, switched on and working in identical environments. Both are setup so that the heating starts when the temperature of ...
7
votes
1answer
161 views

Proof without curves

  Say, what’s that in the distance?   Could be a road full of cars or a wire full of electricity, or whatnot, but this much is for sure:    It is straight and infinitely ...
7
votes
2answers
213 views

Abstract, Mysterious & Chewable!

To find me you need look no further than behind the eye, Take your time to ponder and you'll see me in the sky, I can be shorter than a week or longer than a year, I repeat myself, ...
7
votes
1answer
86 views

Father's Research

My father is a scientist, and he's just asked me to help sort some of his cases in the spirit of Science Fortnight! However, all that is written are the following equations (he's not a mathematician): ...
7
votes
1answer
265 views

A confusing year to study

I'm a teacher at an Academy. I set my students the task of writing a history essay on a year BCE. One of my students, instead of giving me his year, gave me this slip of paper before walking out the ...
6
votes
5answers
1k views

North-facing rocks that soak up polar sunlight [duplicate]

Chapter 155 in the book '365 Surprising Scientific Facts, Breakthroughs, and Discoveries' of Sharon Bertsch McGrayne (Wiley, 1994) states that: North-facing rocks that soak up polar sunlight can be ...
6
votes
7answers
2k views

Which cadaver woke? [closed]

A medical examiner works in Cadaversville, a place where the dead may sometimes wake in the off hours then die once more. While awake, they are not zombies and don't eat people. They just seem to be ...
6
votes
3answers
567 views

Graphical rebus riddle

I... I have some bad news. My computer broke. Yeah, really tragic. Luckily I have a backup computer, but there is a reason it is a backup. It was made a long time ago and... well, its completely ...