Entries tagged with ‘Old Main at Gustavus Adolphus College’

Infrared Photography Helps Students Understand Satellite Images

Geography students sometimes struggle to understand infrared images which are increasingly used in satellite imagery. Mark Bjelland has a Sony cybershot camera modified for infrared photography and took the pictures shown here on September day. Digital cameras are sensitive to near infrared and come equipped with a hot mirror to remove the infrared. It was […]