Feasibility Study of the Possibility of Repeating Danjon's Measurements

重复 Danjon 测量的可能性的可行性研究

• 批准号: 8722328
• 负责人: Sean Twomey
• 金额: $ 3.54万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-15 至 1990-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8722328&HistoricalAwards=false
• 关键词: Feasibility; Study; Possibility; Repeating; Danjon

Starting in the late twenties, Danjon made careful measurements in France to determine the brightness of the "ashen light" on the dark side of the moon. That light produced by illumination from the earth, is controlled by the sun-earth-moon geometry and is proportional to the earth's visible albedo. Careful repetition of Danjon's measurements sixty years later might be a useful test for a possible secular change in the earth's albedo. Under this award, Professor Twomey will examine the feasibility of repeating Danjon's experiment.

从20世纪20年代末开始，丹容小心翼翼地 测量在法国，以确定亮度的“灰” “月亮的黑暗面”。 产生的光 来自地球的照明，由太阳-地球-月亮控制 与地球的可见光成正比。 60年后，丹容的测量结果得到了仔细的重复 可能是一个有用的测试，一个可能的长期变化， 地球的太阳 在这个奖项下，Twomey教授将研究 重复丹容实验的可行性