1. 1920 Film: How the Telephone Talks (Silent Film)

    07:00

    from NW7US Added 472 6 0

    A film from 1920 that explained the "modern" telephone. The concepts are still relevant to today's modern versions, including the cell phone, which is both radio and telephone. This…

    + More details

    What are Tags?

    Tags

    Tags are keywords that describe videos. For example, a video of your Hawaiian vacation might be tagged with "Hawaii," "beach," "surfing," and "sunburn."