# Girl is looking at an object

I remember this very old riddle involving lateral thinking.

Girl is looking at an object.
During the flow of the time, it is becoming thinner at one side and thicker at another. What is she looking at?

In addition, it has multiple solutions. Can you guess them all? I will give some hints.

1. Is today classic (and at the same time it is the most exact solution).

2. Is today vintage.

3. Is today medieval technology (or even possibly neolithic).

2 and 3 can be difficult because nowadays, most of young people have never seen such devices. Luckily 1 is still in use today.

Edit:

*4. Writing this, I just noticed another solution on my screen.

Edit 2:

As many people post very good solutions I noticed that I should be more specific:
Hint 2:

1 and 2 are kinds of medium.
3 is a tool.
4 can be a part of UI component

Ultimate Edit:

I just removed unnecessary history from the question
Congratulations to xhienne and FLash.

• Not sure if one of the answers you are looking for is rot13(tynff), but if it is that has actually been disproved. Sep 25, 2018 at 20:20
• @lPlant I am afraid it is not. Sep 26, 2018 at 8:38
• Please see my discussion with xhienne Sep 27, 2018 at 16:01

Since correct answers have already been given for 2 and 4, here is my proposal for 3:

Is it a spindle?
Or a spinning wheel?

 And here is my proposal for 1:

She is just reading a book

To sum it up:

1 => book
2 => audio cassette
3 => spindle
4 => progress bar

• Bingo! Congratulations! ;) Sep 26, 2018 at 17:04
• 1 -there is still missing solution for it. user477343 was only close. Sep 26, 2018 at 17:14
• I didn't see FLash's edit made in meantime: He is very very close to solution now. Sep 26, 2018 at 17:28
• Bingo! Congratulations! Sep 27, 2018 at 8:40
• Thanks @mpasko256 Flash has an equal number of good answers and their answer for word 1 was very very close (and as valid as a book). I suggest you ask Flash to correct their answer for word 1, to add the answer for word 3 and that you accept their answer instead of mine. Sep 27, 2018 at 10:11

I think the classic answer (I’ve never heard this one before) might be a

Mirror?

This is because

She herself is getting thinner in some places, and thicker in others?

An Hourglass?

Because

The width of the sands get thinner at the top and thicker at the bottom

A Lit Candle?

Because

It gets thinner at the top but the wax pools at the bottom

• It is not a solution but very good shots at all! +1 Sep 25, 2018 at 15:20
• The second answer here was my first thought; however, self-winding is another good option. Sep 25, 2018 at 15:22
• HAHA Stole it from me as I was posting lol Sep 25, 2018 at 15:26
• Close one @PerpetualJ!! Sep 25, 2018 at 15:26

I see some possibilities

2.

Audio Tape or Cassette

1.

A Scroll for writing?

4.

Progress bar. The width of the green increases as white decreases. Or Scroll bar?

• Congratulations: Your 1 is bingo for my 2! Your 2: Somebody just said that but it is not a solution. 4: close enough but not yet Sep 26, 2018 at 8:36
• 4: After edit: Bingo! Sep 26, 2018 at 9:28
• Oh, I didn't see your edit for 1. in the meantime. You are so close with it now! Just remember the hint that it is something still in use today ;) Sep 26, 2018 at 17:24

Just a couple thoughts:

First:

Sundial; a sundial casts a shadow that gets thicker over time (at certain angles).

Second:

Candle Clock; candle clock is an obvious choice because it slowly becomes thin at the top and thicker at the bottom as the wax melts.

I heard once that

Glass is some kind of superfluid, so over time, as noticable in old windows, the glass falls down with gravity, so the window is thicker at the bottom than at the top.

However

I've since heard that that isn't true, and the reason the window is thicker at the bottom in old windows is simple down to how they were made back then.

• I suppose that @lPlant had it already in mind. But interesting way of thinking anyway! Sep 26, 2018 at 9:31
• @mpasko256 oh sorry, i looked through other answers to see if anyone had already said it but must have missed that comment Sep 26, 2018 at 9:44

Her own writing from a pencil?

Since

At first, the pencil could have been sharpened, so the lines in her written letters were thin. Then over time, the lead in the pencil would have slowly become blunt and her letters consequently looked thicker and bolder. Since she might be writing from left to right, the left side (or page) might look thinner than the right.

Or

She might be sharpening a pencil.

Since

A pencil is at first just a stick of lead inside some wood, and then gets thinner on the side it is sharpened whilst having the same thickness on the other side. The other side might even have a rubber at the end which gets slightly thicker the more you rub with it.

If the girl was

writing in cursive (which can be considered feminine)

then there would be some kind of "flow".

• You are very close but not yet! :) It is something very similar Sep 26, 2018 at 8:37

hourglass

Because

during the flow of the time (maybe a hint here), the amount of sand in the upper part decreases (so the sand pile becomes "thinner"), but it increases in the lower part (becomes "thicker")

and

it's actually very old technology, however not yet neolithic

P.S.

The hourglass symbol can be seen on a screen as a cursor icon!

• El-Guest just proposed this solution but unfortunately it is not an answer. Sep 26, 2018 at 11:09

Is it:

the moon? Over time (say a month or longer), the moon waxes and wanes, changing it's appearance from thin to thick.

For the first one, I thought about...

her own life, that is thiner on the future side, and thicker on the past one!

For the second one,

the candle sounds obvious

For the third, I thinkg PerpetualJ first answer matches!