Understanding through Discussion


Welcome! You are not logged in. [ Login ]
EvC Forum active members: 76 (8908 total)
Current session began: 
Page Loaded: 05-20-2019 6:30 PM
29 online now:
DrJones*, dwise1, JonF, Tanypteryx, Theodoric (5 members, 24 visitors)
Chatting now:  Chat room empty
Newest Member: WeloTemo
Happy Birthday: Percy
Post Volume:
Total: 851,663 Year: 6,700/19,786 Month: 1,241/1,581 Week: 63/393 Day: 46/17 Hour: 0/4


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Evolution: Science or Religion?
Kapyong
Member (Idle past 1578 days)
Posts: 344
Joined: 05-22-2003


Message 38 of 41 (79734)
01-21-2004 7:16 AM
Reply to: Message 11 by EndocytosisSynthesis
07-19-2003 5:22 PM


Greetings all,

quote:
but I have seen photographs of them by electron microscopes and I know that scientists have seen electrons before.

Hahaha :-)
Great joke.

Electron microscopes used to see electrons?

I laughed right out loud, funniest thing I've heard all week.


This message is a reply to:
 Message 11 by EndocytosisSynthesis, posted 07-19-2003 5:22 PM EndocytosisSynthesis has not yet responded

Replies to this message:
 Message 39 by Kapyong, posted 01-21-2004 7:31 AM Kapyong has not yet responded

    
Kapyong
Member (Idle past 1578 days)
Posts: 344
Joined: 05-22-2003


Message 39 of 41 (79735)
01-21-2004 7:31 AM
Reply to: Message 38 by Kapyong
01-21-2004 7:16 AM


Ion trap used to view a single atom
Oh,
whoops,
he was serious.

That reminds me of the invention of the ion trap (is that the right term?)

I understand the inventor used it to trap a single ion in space, then shone a bright laser beam at it and was able to directly observe the tiny sparkle of light - i.e. he saw a SINGLE atom with his NAKED EYE.

I thought that was probably the most exciting experiment I have ever heard of - imagine viewing a single atom directly - amazing.

Does anyone remember who it was? (one of the Braggs?)

I told this story once and was answered :
"no he didn't see the atom, he just saw the light bouncing of it"

D'oh


This message is a reply to:
 Message 38 by Kapyong, posted 01-21-2004 7:16 AM Kapyong has not yet responded

Replies to this message:
 Message 40 by Loudmouth, posted 01-21-2004 6:24 PM Kapyong has responded

    
Kapyong
Member (Idle past 1578 days)
Posts: 344
Joined: 05-22-2003


Message 41 of 41 (79916)
01-21-2004 9:10 PM
Reply to: Message 40 by Loudmouth
01-21-2004 6:24 PM


Re: Ion trap used to view a single atom
Greetings Loudmouth,

Thanks for your reply

quote:
I don't know the specifics of the experiment, but I find it very unlikely that anyone can see light bouncing off of one atom.

Indeed, that's why I'd like to find out the details - I am fairly sure my source was a good one, but I can't remember the details.

If it was true, it surely must have been a BIG atom.

quote:
I would guess that there was an energetic reaction that resulted in the sudden release of numerous photons when the laser light struck the ion.

Sounds plausible.

quote:
Perhaps the ion was captured in a crystal lattice, or some other support structure?

No, not a crystal lattice - my understanding of the experiment is that the ion trap device is some sort of electromagnetic "bottle" which holds a single ion in space, and that the electric current controlling the ions can limited to release individual ions.

This is apparently verified because the amount of energy involved in the release corresponds to exactly ONE ion - I wish I could remember the details, sorry.

Does anyone know anything about these "ion trap" devices?

(Talking of exciting naked eye observations - I saw supernova 1987a with my naked eye - just.)

Iasion


This message is a reply to:
 Message 40 by Loudmouth, posted 01-21-2004 6:24 PM Loudmouth has not yet responded

    
Newer Topic | Older Topic
Jump to:


Copyright 2001-2018 by EvC Forum, All Rights Reserved

™ Version 4.0 Beta
Innovative software from Qwixotic © 2019