 |
 |
|
|
-
When did the accurate mechanical clocks appear?:
The clock was invented part by part. In 1577, Jost Burgi invented the minute hand. Burgi’s invention was part of a clock made for...
[5/24/2009]
CATEGORY:
TAGS:
, , , , , , , , , , , , , , ,
|
 |
PAGE: 1
|
Total Records available now: 1 |
|
|