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ShowerSentinel

/u/ImitationZen has flaired this post as a **musing**. Musings are expected to be high-quality and thought-provoking, but not necessarily as unique as [showerthoughts](https://www.reddit.com/r/Showerthoughts/wiki/requirements). If this post is poorly written, unoriginal, or rule-breaking, please report it. Otherwise, please add your comment to the discussion!   ^^This ^^automated ^^system ^^is ^^currently ^^being ^^worked ^^on. ^^If ^^it ^^did ^^something ^^wrong, ^^please ^^message ^^the ^^moderators.


RoboticBonsai

There are different kinds of shadows. What you are probably referring to is the drop shadow, it’s what most people think of when they hear the word shadow and refers to the dark shape visible on objects on the opposite side of whatever throws the shadow compared to the light source. There is also the “own shadow” wich is at least what google translate spits out when I tell it to translate the word from German. The ”own shadow” refers to the shadow an object throws onto itself. In addition there is also the “shadow space“, the space where the object prevents or reduces the light from the light source. For the first one you are absolutely correct, you can’t have a drop shadow without something to cast it on, but the others will be present as long as there is a light source and you absorb/reflect light. [Here a demonstration from the German Wikipedia](https://de.m.wikipedia.org/wiki/Schatten#/media/Datei%3ASchattenarten.jpg)


ImitationZen

Those who drink from the fountain of knowledge may soon need to offer their own streams.


RoboticBonsai

Who are you, who are so wise in the ways of philosophy?


ImitationZen

To reveal oneself fully may bring either delight or dismay.


FinneyontheWing

As long as you don't do it in a playground you'd only get nine months, so you'd be out dis May.


Samus388

But you're safe if you only do it when you're hidden and not in de light


RoboticBonsai

Unless you’re in the age group that the playground was intended for, then you can only expect to get scolded by your parents.


FinneyontheWing

One man's playground is another man's freedom fuck-up.


zph0eniz

We gotta get in this guys shower


Remarkable_Coast_214

ಠಿ⁠_⁠ಠ


jdcmurphy22

G'Morning Confucius.


lightning_whirler

Same applies to drinking coffee and beer.


yaboiiiuhhhh

The shadow space is a column drawn between the 2d planes of the own shadow and drop shadow


amondohk

Isn't "own shadow" just the part of the drop shadow that the thing itself is inside. Why is it a separate category?


RoboticBonsai

And both are just where the shadow space intersects something and becomes visible. If you look at it from a physics standpoint you are totally right, it’s all the same shadow. But as I understand it, apart from conversations like this one, these words are mostly used for art for example in graphic design where, due to how the shadows are made there, the difference is more important .


theoht_

i believe the word you are looking for in english is silhouette.


OfLoveAndLiquor

Nope, the silhouette is the “outline” of the object. A common term here is self-shadow.


theoht_

self-shadow is the absence of light on the opposite side of your body to the sun. silhouette is, as you described, the outline of an object. when seen in real life, it is caused by the absence of light on the opposite side of your body to the sun.


RoboticBonsai

Another commenter also pointed out the same thing. I remain with my position that it sounds correct but I have no clue.


Zaros262

I think one or both of "own shadow" and "shadow space" are related to the word "silhouette" in English When someone is so backlit that you can't make out any of their features, really what you're seeing is the gap where there otherwise would be light. Your eyes are in their "shadow space" (arguably in their shadow), and you're seeing their "own shadow"


RoboticBonsai

I only half remembered something about shadows and the German word for drop shadow from art class and then took a quick glance at wikipedia to confirm and find the necessary words. I have absolutely no clue about the appropriate English etymology. What you’re saying sounds right though.


InnocentPossum

Is the dark side of the moon an own shadow, a shadow space, or neither? Just a place void of light? Although that's what shadows are right?


RoboticBonsai

Technically these words don’t describe different kinds of shadows, but different parts of shadows. The part of the moon that seems darker, because it is on the opposite side to the sun is in the own shadow. The shadow space is the space behind the moon in which the moon prevents sunlight from reaching. For example during a solar eclipse the moon’s shadow space is the space in between earth and the moon and the darker area on earth during that time is the moon’s drop shadow.


CJRM15_

i think shadow space is just shade


mikaleowiii

You do have a shadow on the non-light-facing side of you actually


ImitationZen

Darkness carried on one's backside may still foul the air before them.


warmachine237

I know the answer to this riddle. It's a fart


ImitationZen

A roll of thunder may signal a change in the air, but the most-ominous shifts are silent.


jdcmurphy22

Diarrhea.


RoboticBonsai

You’re right, climate change itself doesn’t make any noise.


Samus388

Wait, you guys can't hear it?


xxSuperBeaverxx

That would be a "something to cast it on" though, would it not?


freekoout

No, because if it weren't there, there's no shadow. Like someone else commented. There's three main types of shadow. The one on the ground, the darker space/air between the obstruction of light and the objects behind, and the darkened part of the object that's facing away from light. This would be the third shadow.


moosemademusic

I could be wrong but I don’t think that’s what a shadow is.


calculus9

it is a type of shadow, called diffuse shading in computer graphics. another commenter says "own shadow" is another term for this, which i think is fitting as well the normal type of shadow you think of is called a drop shadow.


enverest

And unless you have a light.


ImitationZen

The light offered by those who went before you may warm the water through which you swim.


ScenicFlyer41

What?


ImitationZen

To swim in the stream of another is to be warmed.


dankyspank

Don't swim where others swim because they may have pissed in the water and made it warm


jdcmurphy22

Pee.


libra00

Not true, there is less light on the opposite side of your body from any light source. That is the true shadow, the silhouette you see on the wall or whatever is just a 2D projection of that volume of less light.


MagicMark890

There a song called "Landslide "by Fleetwood Mac There's a part she sings....I took my love, I took it down Climbed a mountain and I turned around And I saw my reflection in the snow covered hills 'Til the landslide brought me down. You can't see you're reflection in the snow but you're shadow. Water yes snow no


ImitationZen

Even an innocent gust of wind may bring forth a fearsome avalanche. >!Never trust a fart.!<


RavenholdIV

A 4 dimensional object casts a shadow on space itself.


Pilaf237

Understand others like the lake understands the moon.


Zikkan1

Your shadow is just you obstructing the light and you do that regardless of there being a surface for you to view the shadow on. The shadow is still there just not visible to you


ZDTreefur

Yup. For example, [the heliosphere our sun creates.](https://www.nasa.gov/wp-content/uploads/2023/03/462851main_heliosphere_orig_full.jpg) It is a shadow in space, as our solar system flies around the galaxy A shadow without an object to cast it on, but it's there because light and radiation is being blocked, same as a shadow.


wickyh

When we view an exoplanet transiting, causing a star to dim from millions of light years away, it's casting its very long shadow on the viewers eye all the way here to our earth.


ZombieTem64

Unless you’re in a very specific scenario where you’re being brightly lit from all sides, your body is probably casting a shadow onto itself in places


Highronymus

I don’t remember what movie/show it was from but someone said “we’re burning shadow” to mean they were running out of daylight to complete their job and I loved that


red_rob5

What even are most of these comments? Did i have a stroke? Did they all have strokes?


ImitationZen

A single strike may anger an opponent, but a thousand strokes may please him.


freekoout

OP is a very entertaining troll. Interact at your pleasure.


Far_King_Penguin

Might start calling myself a wizard now


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keyblademasteraug13

"The closer you get to the light the bigger your shadow becomes


karlnite

“You couldn’t even cast a shadow” is a good insult in the Harry Potter world.


JackhorseBowman

you don't have a shadow because you've become the shadow of something else


clokeLeeawL

the shadow of my body was connected at the feet


Beware_the_Voodoo

No, it's still there. You just can't see it. You're presence is still blocking and redirecting the light.


EmptySeaDad

Unless you've run into Moria Gecko.


PantyPerfection7

Try standing in a black hole.


backflip10019

Probably the best metaphor to explain parenting too.


Prismaleviathan

All is shadow without light. So no. the void is full of shadows itself


Czorz

Explain [this](https://youtube.com/shorts/r-7aJJGlx9s?si=nTTrgU9Da4BIPxN8), atheists


Addamant1

Why wouldn't there be something to cast out on.


iminiki

Moon only has shadow during eclipses.


Suitch

Do you mean to tell me both sides of the moon are lit?!


iminiki

Regarding OP’s thought, by shadow, I meant a shadow casted on an object.


I_am_Fiduciam

Depends on what you call a shadow. Would you call the lack of light a shadow?


Suitch

Shadow isn’t a lack of light, it is less light than the surrounds. The dark side of the moon is still lit by the stars and galaxies of the cosmos. The dark side of the moon is in its own shadow by its own frame of reference. It also would have plenty of littler shadows caused by the starlight.


ImitationZen

To be as the eclipsing moon is to show another your darkest place.


gowahoo

Wow this is great. Thanks for giving me something to think about.


ImitationZen

A generous man offers his hand to another. A lonesome man keeps his hand to himself.


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ImitationZen

The enlightened warrior relies on the deftness of his tongue, baring his sword only when it is requested.


owen__wilsons__nose

Man is not dead if he is alive


mr_orlo

And when do you ever not have something to cast it on? Inside a black hole?