Time
Pick A Date in History
What Happened On This Day
Groups
People in History
Historical Collections
Cities in History
Family Timelines
Latest Posts
About
Our Story
Blog
Data
Terms of Services
Post on Histolines
Quiz
Log In
Log in
Register
`whenYear` >='-3000'
AND `whenYear` <='3000'
AND
( `whoCharName` = 'heliotrope ' or `whoRel` = 'heliotrope')
AND (`access` ='Public' )
ORDER BY `whenYear` ASC, `whenMonth` ASC , `whenDay` ASC,`eventSig` DESC
LIMIT
0
,
300
heliotrope
Grid
List
Quotes
Pictures
Events
Add Something...
Post Event
Add Quote
Share Photo
Upload Photo
Carl Friedrich Gauss
invented
heliotrope
in
1818
an instrument that uses a mirror to reflect sunlight over great distances, to measure positions.
...
750837