# Is there lag in mirrors?

Discussion in 'The Edge of the Forum' started by Haloman800, Feb 5, 2014.

# Is there lag in mirrors?

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1. ### Haloman800a real gril

Member
Dec 18, 2009
When I see a reflection in a mirror, is there any lag between me waving my hand and it appearing in the mirror? Something like .000000000000000000000001 maybe?

2. ### Black-IceFounder of the Church of Renamon

Member
Oct 31, 2011
London
How can mirrors be real If our eyes aren't real?

Ammako and EZ-Megaman like this.
3. ### ClarkyDon't you know who I think I am?

Member
Oct 4, 2007
how many funny cigarettes have we smoked tonight?

4. ### YoukaiDemon

Member
Jul 1, 2004
Germany , NRW
yes there is as the light needs time to travel back and forth

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5. ### IsaacAmerican

Member
Dec 8, 2012
Here? Right here? What about, say... over there?
A very, very, very, very, very, very, small, indiscernible by human means amount of lag.

6. ### Danny350Member

Newcomer
Sep 14, 2009
The light would reflect so fast that there would be no practical delay, but light does take time to travel so it wouldn't be instant in reality. The time it would take would be so insignificant that no human could ever detect it with our own eyes.

So simply put, there is a delay in a REALLY short scale of time, but we're talking about some of the smallest units of time we know.

7. ### FAST6191Techromancer

Reporter
Nov 21, 2005
The bigger question is would the lag be significant in light of thermal effects in the mirror?

Also amusing

Sterling likes this.

Member
May 5, 2013
You have to deal with the speed of light through whatever medium(s) separate you from the mirror. Based on that speed and the distance separating you from the mirror (times two as the light must travel there and back) give you your propagation delay.

9. ### Vulpes AbnoctoDrinks, Knows Things

Former Staff
Jun 24, 2008
So there you have it. The serious question got a serious answer. There is indeed an imperceptible lag at the typical mirror-viewing distance.

Now lets get some not-so-serious ones.

Foxi4 likes this.

Member
Jun 14, 2009
We need to go deeper...

Luigi2012SM64DS likes this.

Member
May 5, 2013

Well if you want to start getting crazy, I always enjoyed toying with the idea of setting up a series of Mirrors around the planet in orbit or something that would give us the ability to look into the past.

12. ### chavosaurAustin Trujillo

Member
Mar 11, 2012
Huntersville, NC
Have you checked your Drivers speeds? Are you running Windows or Is this a legit mirror?

EZ-Megaman likes this.
13. ### ChocolinaGBAtemp Fan

Member
May 28, 2012
Actually no. Because lag isn't the best term to describe speed of light.
.
Theres always going to be a latency between your eyes, the mirror (or any surface reflecting light) and your eyes again, but theres never any lag because light is a constant speed that doesn't slow down under normal and most extreme conditions. Theres no lag because you're still getting the light at the fastest speed possible in the laws of physics, so as long as the speed of light can't fluctuate up and down between you and the mirror, then lag doesn't exist, because lag can't exist when something is going so fast that it literally cannot go any faster and at the same time doesn't slow down..

Narayan likes this.
14. ### CyanGBATemp's lurking knight

Global Moderator
Oct 27, 2002
Engine room, learning
Why myopia (short-sightedness) is not fixed when looking into a mirror while the mirror is placed at a short distance from your eyes?

15. ### Luigi2012SM64DSG-old member

Banned
Aug 27, 2011
Minecrapt
Fuck im in Limbo.

Member
May 7, 2011
Québec
light speed is about 3*10^8 m/s and described by the letter C (like E=MC²)
if you stand at one meter of a mirror, you'll see yourself as you were exactly 2/C, 6.667*10^-9 or 0.00000000667 second earlier

at light speed, it takes:
1.2 to 1.3 sec for a one way to the moon
8 min 20 sec for a one way to the sun

17. ### GaharsBakayaro Banzai

Member
Aug 5, 2011
New Jersey
There may be a slight delay between you asking the man in the mirror to change his ways and making the world a better place.

Better question: Does the wind have a pattern? If so, how does one follow it?

Foxi4 and Vulpes Abnocto like this.

Member
Mar 15, 2009
Latency yes there is.

19. ### FAST6191Techromancer

Reporter
Nov 21, 2005
I would have thought the wind would be a good example of Brownian motion.

20. ### GaharsBakayaro Banzai

Member
Aug 5, 2011
New Jersey

Not with vitiligo, it isn't!