Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Silvering mirrors with mercury-tin amalgam
    From: Geoffrey Kolbe
    Date: 2021 May 8, 00:40 -0700

    Reg Garton was Professor of the Spectroscopy group in the Physics Department at Imperial College some forty years ago. He once related to me that the Spectroscopy group had been situated in the basement of the old Royal College of Science, before it got torn down, and was relocated to the basement of the new Physics building back in the mid '60's. The relocation was something of a relief for the experimental spectroscopists in the group, who had struggled to contend with mercury absorption lines in the spectra they recorded in the old Royal College of Science laboratory, such was the level of mercury vapour in the air.

    When they pulled up the parque floor in the old labs, there was a lake of murcury underneath, spilled over the years from mercury diffusion pumps and the Toepler pumps before them. As he pulled on a cigarette, Reg related that none of the people who had worked in the labs at that time had come to any harm and lived out their normal span without undue interruption from any disease that an association with murcury was supposed to give them....

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site