Remote sensing, four basic radiation laws help us understand how objects give off and interact with energy (electromagnetic radiation). These laws link an object's temperature , wavelength , and the amount of energy it gives off: 1. Planck's Law Every object that has a temperature (above absolute zero) gives off energy at all wavelengths. But how much it gives off at each wavelength depends on its temperature. This law explains the full energy pattern (spectrum) of a hot object. 2. Stefan-Boltzmann Law Hotter objects give off more total energy. The energy released increases quickly as temperature rises — to the fourth power of the temperature. 3. Wien's Displacement Law Hotter objects give off energy at shorter wavelengths (like blue light), while cooler objects emit at longer wavelengths (like red or infrared). So, the color (or wavelength) of maximum emission shifts based on temperature. 4. Kirchhoff's Law If an object absorbs energy well at a cert...
Focused on advancing knowledge and expertise in Geography, GIS, Remote Sensing, Geographical Data Science, and Analysis, I am deeply committed to teaching and conducting research in these fields. With a keen interest in leveraging data-driven approaches for informed decision-making, I specialize in crafting maps that facilitate effective analysis and interpretation of spatial information. Assistant Professor Of Geography, PG and Research Department of Geography, Government College Chittur