Indira Gandhi Delhi Technical University For Women (Established by Govt. of Delhi vide Act 09 of 2012) Kashmere Gate, Delhi – 110006 Ph.D Admissions: Academic Year 2019-20 (Even Semester: Jan. 2020) http://www.igdtuw.ac.in Applications for admissions to Ph.D Programme of IGDTUW for the Academic Year 2019-20 (Even Semester: Jan. 2020) are invited in various areas of Engineering, Applied Sciences and Humanities. Ph.D Programme at IGDTUW is only for female students. Admission shall be on the basis of Research Aptitude Test (RAT) followed by interview. Applicants who have qualified GATE/NET will be exempted from RAT Exam and will be called directly to appear in interview. IGDTUW Junior Research Fellowship may be offered to few of the selected PhD scholars. IMPORTANT DATES: Online Application starts on –06/12/2019 Last Date of Applications –25/12/2019 Date of RAT Examination – 31/12/2019 Application Process: Interested candidates may apply online through the Websitehttp://www.igdtuw.ac.in Help Desk Email ID: phdadmissions@igdtuw.ac.in For details please visit University website. Helpline Numbers-011-23900220, 23900221
In Remote Sensing , satellites record electromagnetic radiation (EMR) that is reflected or emitted from the Earth. Before reaching the sensor, radiation interacts with: The Atmosphere The Earth's Surface These interactions control how satellite images look and how we interpret them. I. Interaction of EMR with the Atmosphere When solar radiation travels from the Sun to the Earth, four main processes occur: 1. Absorption Definition: Absorption occurs when atmospheric gases absorb radiation at specific wavelengths and convert it into heat. Main absorbing gases: Ozone (O₃) → absorbs Ultraviolet (UV) Carbon dioxide (CO₂) → absorbs Thermal Infrared Water vapour (H₂O) → absorbs Infrared Concept: Atmospheric Windows These are wavelength regions where absorption is very low, allowing radiation to pass through the atmosphere. Remote sensing depends on these windows. For example, satellites like Landsat 8 use visible, near-infrared, and thermal bands located in atmospheric windows. 2. Trans...

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