+ Post New Thread
Page 8 of 18 FirstFirst ... 456789101112 ... LastLast
Results 106 to 120 of 268
General Chat Thread, Nephilims Fact of the Day in General; Originally Posted by timzim Light passing through sodium? Have you ever seen sodium? It's a metal. Dunno where you live ...
  1. #106

    localzuk's Avatar
    Join Date
    Dec 2006
    Location
    Minehead
    Posts
    17,102
    Thank Post
    512
    Thanked 2,311 Times in 1,787 Posts
    Blog Entries
    24
    Rep Power
    803
    Quote Originally Posted by timzim View Post
    Light passing through sodium? Have you ever seen sodium? It's a metal. Dunno where you live but on my world light doesn't pass through metals. It tends to stop and bounce off.
    It is possible to heat metals until they form gasses. Just look at mercury - it evaporates in normal temperature air.

  2. #107

    Domino's Avatar
    Join Date
    Oct 2006
    Location
    Bromley
    Posts
    4,021
    Thank Post
    212
    Thanked 1,165 Times in 758 Posts
    Blog Entries
    4
    Rep Power
    481
    Quote Originally Posted by timzim View Post
    Light passing through sodium? Have you ever seen sodium? It's a metal. Dunno where you live but on my world light doesn't pass through metals. It tends to stop and bounce off.
    It was actually through sodium atoms - a laser bathed sodium vapour was used in the experiment Slow Light

  3. #108

    Join Date
    Jun 2007
    Location
    London
    Posts
    894
    Thank Post
    64
    Thanked 171 Times in 140 Posts
    Rep Power
    54
    Quote Originally Posted by RabbieBurns View Post
    sodium is salt is it not?
    No. That's sodium chloride.

  4. #109

    Join Date
    Jun 2007
    Location
    London
    Posts
    894
    Thank Post
    64
    Thanked 171 Times in 140 Posts
    Rep Power
    54
    Quote Originally Posted by Domino View Post
    Ah, the Bose-Einstein condensate...silly me...

  5. #110

    MK-2's Avatar
    Join Date
    Oct 2006
    Location
    Nottingham
    Posts
    3,237
    Thank Post
    149
    Thanked 581 Times in 307 Posts
    Blog Entries
    8
    Rep Power
    199
    Quote Originally Posted by timzim View Post
    Ah, the Bose-Einstein condensate...silly me...
    can't believe you forgot about the bose-einstein condensate. how stupid must you feel right now.......

  6. #111

    nephilim's Avatar
    Join Date
    Nov 2008
    Location
    Dunstable
    Posts
    11,129
    Thank Post
    1,433
    Thanked 1,699 Times in 1,272 Posts
    Blog Entries
    2
    Rep Power
    365
    indeed!!

  7. #112

    nephilim's Avatar
    Join Date
    Nov 2008
    Location
    Dunstable
    Posts
    11,129
    Thank Post
    1,433
    Thanked 1,699 Times in 1,272 Posts
    Blog Entries
    2
    Rep Power
    365
    Fact #39: There were seven sheep on Noah's Ark, because there were seven of every type of clean animal onboard the Ark, with two of each unclean animal like pigs. (religious definitions, not mine)

  8. #113

    RabbieBurns's Avatar
    Join Date
    Apr 2008
    Location
    Sydney
    Posts
    5,476
    Thank Post
    1,305
    Thanked 469 Times in 306 Posts
    Blog Entries
    6
    Rep Power
    198
    how can something that is a myth be a fact? :P

  9. #114

    nephilim's Avatar
    Join Date
    Nov 2008
    Location
    Dunstable
    Posts
    11,129
    Thank Post
    1,433
    Thanked 1,699 Times in 1,272 Posts
    Blog Entries
    2
    Rep Power
    365
    In the morning I'll post another fact then :-p

  10. #115

    nephilim's Avatar
    Join Date
    Nov 2008
    Location
    Dunstable
    Posts
    11,129
    Thank Post
    1,433
    Thanked 1,699 Times in 1,272 Posts
    Blog Entries
    2
    Rep Power
    365
    Seeing as fact#39 has been dismissed as not true...

    Fact #39: Cracking knuckles does not cause arthritis. A science experiment was performed on 100 people over 60 years where one hand had cracked knuckles, the other didn't. Both hands were examined and seemed equal for the potential for arthritis; cracking caused no noticeable damage.
    Last edited by nephilim; 15th February 2011 at 09:34 AM. Reason: re-edited the fact number

  11. #116

    localzuk's Avatar
    Join Date
    Dec 2006
    Location
    Minehead
    Posts
    17,102
    Thank Post
    512
    Thanked 2,311 Times in 1,787 Posts
    Blog Entries
    24
    Rep Power
    803
    Quote Originally Posted by nephilim View Post
    Seeing as fact#39 has been dismissed as not true...

    Fact #40: Cracking knuckles does not cause arthritis. A science experiment was performed over 60 years where one hand had cracked knuckles, the other didn't. Both hands were examined and seemed equal for the potential for arthritis; cracking caused no noticeable damage.
    A single study with a single pair of hands does not mean a useful conclusion to me... If they'd done it with 1000 pairs of hands over those years, then that would be statistically significant.

  12. #117

    nephilim's Avatar
    Join Date
    Nov 2008
    Location
    Dunstable
    Posts
    11,129
    Thank Post
    1,433
    Thanked 1,699 Times in 1,272 Posts
    Blog Entries
    2
    Rep Power
    365
    I miswrote that...i'll edit the post

  13. #118

    vikpaw's Avatar
    Join Date
    Sep 2006
    Location
    Saudi Arabia
    Posts
    5,590
    Thank Post
    638
    Thanked 1,307 Times in 1,089 Posts
    Rep Power
    336
    Quote Originally Posted by timzim View Post
    Light passing through sodium? Have you ever seen sodium? It's a metal. Dunno where you live but on my world light doesn't pass through metals. It tends to stop and bounce off.
    Quote Originally Posted by Domino View Post
    It was actually through sodium atoms - a laser bathed sodium vapour was used in the experiment Slow Light
    Quote Originally Posted by timzim View Post
    Ah, the Bose-Einstein condensate...silly me...
    Well, there is the possibility of quantum mechanical tunnelling, which would allow, under certain circumstances, light to pass through a solid. And you don't need to bother with super-cooling.

    A fun experiment to try at home is just to shine an led torch under your thumb, and see your nail light up red. Not quite the same thing, and it defo wont be much slower, but clever all the same.

    Quote Originally Posted by RabbieBurns View Post
    how can something that is a myth be a fact? :P
    Second that notion.

    Quote Originally Posted by nephilim View Post
    Seeing as fact#39 has been dismissed as not true...

    Fact #40: Cracking knuckles does not cause arthritis. A science experiment was performed on 100 people over 60 years where one hand had cracked knuckles, the other didn't. Both hands were examined and seemed equal for the potential for arthritis; cracking caused no noticeable damage.
    Quote Originally Posted by nephilim View Post
    I miswrote that...i'll edit the post
    Fact #40, should be renumbered #39 else we'll be short a fact

    I get the feeling this thread reads much like the legal department's inbox at Mythbusters, anyone else..?

  14. #119

    nephilim's Avatar
    Join Date
    Nov 2008
    Location
    Dunstable
    Posts
    11,129
    Thank Post
    1,433
    Thanked 1,699 Times in 1,272 Posts
    Blog Entries
    2
    Rep Power
    365
    fact number re-edited

  15. #120


    Join Date
    May 2009
    Location
    UK
    Posts
    2,105
    Thank Post
    256
    Thanked 450 Times in 251 Posts
    Rep Power
    141
    I can't say i've gone to any great lengths to investigate it, but I believe the reason that when you shine a torch through your thumb/fingers and you can 'see though' them, is due to light reflection and density of materials.

    From what I remember/understand, it works in a similar principle to Optical Fibre, and the red comes from your skin acting as a light filter. Light is bounced off the bones of your finger, and reflected within the layer of skin. Your nail is is a change in density, altering the light reflection patterns and so light escapes in a different amount and pattern.

SHARE:
+ Post New Thread
Page 8 of 18 FirstFirst ... 456789101112 ... LastLast

Similar Threads

  1. Please help fact check my report comparing Moodle and Fronter
    By cherylluzet in forum Virtual Learning Platforms
    Replies: 14
    Last Post: 5th March 2010, 11:29 AM
  2. Replies: 17
    Last Post: 24th November 2009, 11:32 PM
  3. Computer to Pupil ratios - fact or fiction?
    By heybatesy in forum General Chat
    Replies: 38
    Last Post: 1st May 2009, 03:09 PM
  4. Is this blog fact or fiction?
    By kennysarmy in forum Virtual Learning Platforms
    Replies: 3
    Last Post: 15th May 2008, 10:32 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •