The Naked Scientists

The Naked Scientists Forum

Author Topic: Why can fingers reflect light?  (Read 4335 times)

Bernard Underwood

  • Guest
Why can fingers reflect light?
« on: 13/03/2009 01:30:02 »
Bernard Underwood asked the Naked Scientists:
   
Why can some people, in a certain light, have fingers that reflect light?

What do you think?


 

Offline Supercryptid

  • Hero Member
  • *****
  • Posts: 606
    • View Profile
    • http://www.angelfire.com/sc2/Trunko
Why can fingers reflect light?
« Reply #1 on: 13/03/2009 02:52:27 »
I'm not sure what you're trying to ask. Everyone's fingers reflect light to some degree. Otherwise, they would either be jet black (complete absorption of light) or invisible (no interaction with light).
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Why can fingers reflect light?
« Reply #2 on: 13/03/2009 03:42:21 »
Maybe they just have really shiny and nicely polished nails? :)
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Why can fingers reflect light?
« Reply #3 on: 13/03/2009 04:41:56 »
Like this?

 

lyner

  • Guest
Why can fingers reflect light?
« Reply #4 on: 13/03/2009 12:34:44 »
I think you mean 'transmit light' - not 'reflect light'.
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Why can fingers reflect light?
« Reply #5 on: 14/03/2009 01:59:49 »
Or like? :)

 

Offline bookslinger

  • First timers
  • *
  • Posts: 3
    • View Profile
Why can fingers reflect light?
« Reply #6 on: 19/03/2009 13:41:47 »
They certainly slightly magnify light - would this not be do with the fact they are slightly translucent and therefore almost work like a frosty glass?
 

Offline tony6789

  • Neilep Level Member
  • ******
  • Posts: 1127
    • View Profile
Why can fingers reflect light?
« Reply #7 on: 19/03/2009 14:28:13 »
I'm not sure what you're trying to ask. Everyone's fingers reflect light to some degree. Otherwise, they would either be jet black (complete absorption of light) or invisible (no interaction with light).

then does pretty much everything reflect light?? (exluding space, blackholes etc.)
 

Offline Bored chemist

  • Neilep Level Member
  • ******
  • Posts: 8661
  • Thanked: 42 times
    • View Profile
Why can fingers reflect light?
« Reply #8 on: 19/03/2009 19:32:17 »
I'm not sure what you're trying to ask. Everyone's fingers reflect light to some degree. Otherwise, they would either be jet black (complete absorption of light) or invisible (no interaction with light).

then does pretty much everything reflect light?? (exluding space, blackholes etc.)

Yes.
 

Offline RD

  • Neilep Level Member
  • ******
  • Posts: 8126
  • Thanked: 53 times
    • View Profile
Why can fingers reflect light?
« Reply #9 on: 19/03/2009 20:20:39 »
Do I get brownie points for mentioning that human skin emits light: ultra weak bioluminescence...
 
Quote
The typical detected magnitude of "biophotons" in the visible and ultraviolet spectrum ranges from a few up to several hundred photons per second per square centimeter of surface area, much weaker than in the openly visible and well-researched phenomenon of normal bioluminescence
http://en.wikipedia.org/wiki/Biophoton

« Last Edit: 19/03/2009 20:38:52 by RD »
 

Offline Chemistry4me

  • Neilep Level Member
  • ******
  • Posts: 7709
    • View Profile
Why can fingers reflect light?
« Reply #10 on: 20/03/2009 01:09:03 »
Here, have a karma point on me. :)
 

The Naked Scientists Forum

Why can fingers reflect light?
« Reply #10 on: 20/03/2009 01:09:03 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums