Qing · Astronomer

Richer 利實爾

Lishier

Attested AD 1672

Passages: 1
Chapters: 1
Histories: 1

Overview

Richer was an Astronomer.

Life and dates

Attested activity

AD 1672 康熙十一年
Directly stated · Draft History of Qing 50, passage 27

Origins and identity

Western 西人
Directly stated · Draft History of Qing 50, passage 27

Career and standing

astronomer 西人
Directly stated · Draft History of Qing 50, passage 27

Places and affiliations

At Cayenne Island 噶耶那島 · Relation Observed at
Directly stated · Draft History of Qing 50, passage 27

Events and relationships

Measured mars zenith distance
Scientific · Observer · With Cassini (噶西尼) · At Cayenne Island 噶耶那島
Directly stated · Draft History of Qing 50, passage 27

References in the histories

Draft History of Qing, Chapter 50Volume 50 Treatises 25: Calendar 6 · 1 passage

康熙十一年壬子秒分前十四日夜半，火星與太陽沖，西人噶西尼於富郎濟亞國測得火星距天頂五十九度四十分一十五秒，利實爾於同一子午線之噶耶那島測得火星距天頂一十五度四十七分五秒，同時用有千里鏡能測秒微之儀器，與子午線上最近一恆星，測其相距。 On the night fourteen days before the Kangxi 11 renzi epoch mark, at Mars's opposition, Cassini in France measured Mars at 59°40′15″ from the zenith while Richer on Cayenne, on the same meridian, found 15°47′5″; both used telescopic instruments precise to the second and measured each planet's distance from the nearest meridian star.