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माता बिना जगत यो अब शून्य भैगो, संसारको सकल सार उठेर गैगो । हा धर्मराज ! किन नी यसरी रुवायौ ? केले अपार दुख–सागरमा बुडायौ ? । - गुण रत्नामाला, जगन्नाथ उपाध्याय गुरागाईं

https://unsplash.com/photos/worms-eye-view-of-forest-during-day-time-19SC2oaVZW0 Biodiversity  This refers to 'the variability of living organisms, between and within species, and the changeability of the ecosystems to which they belong' (The Convention on Biological Diversity) Carbon footprint The carbon dioxide (CO2) emissions of a person, operation or business, typically measured in tonnes. CO2e. or carbon dioxide equivalent, is the standard unit for measuring carbon footprints across indus-tries. While there are more greenhouse gases that contribute to climate change, emissions are currently and typically measured in terms of CO2. Carbon neutral The balance between emitting, and the voluntary reduction and compensation (offsetting) of emissions, to achieve a neutral emission equilibrium. Circular economy A circular economy is regenerative and aims to reduce the consumption of finite virgin resources. It encourages the evolving or adaptation of mostly lifestyle products s...

The gas makes up a tiny quantity of our atmosphere but it has a big impact. Carbon dioxide (CO₂) accounts for just 0.04 per cent of Earth's atmosphere, so how can it have such a big effect on the planet's climate? Well, firstly, CO₂ traps heat (hence it being known as a greenhouse gas) and secondly, it remains in the atmosphere for centuries.  Earth receives huge quantities of energy from the Sun in the form of sunlight. As this is short-wave radiation, it passes through the atmosphere largely unhindered. Most of that energy is absorbed by the surface, but about 17 per cent is reflected back in the form of heat (long-wave, infrared radiation). Infrared radiation effectively passes  straight through oxygen and nitrogen (which comprise the vast majority of Earth's atmosphere), thanks to their relatively simple molecular structure.  But the molecular structure of CO₂ is more complex, so it absorbs the infrared and heats up, then begins to radiate its heat to molecu...

  A aberration A distortion in an image caused by a flaw in a mirror or lens. achromatic color A color with no saturation, such as light gray. acquire A software menu selection to scan from within the program (if it is TWAIN compliant). ADC (analog-to-digital converter) A device that measures electrical voltages and assigns digital  values to them. Airy disc A disc of light caused when a pinpoint of light is diffused to form concentric halos about the  original point. aliasing The noticeable repeated patterns, lines, or textures in any photographed or scanned subject  that conflict with the pattern of an electronic sensor’s pixel arrangement. For example, diagonal lines  represented by square pixels will produce jagged lines. analog The measurement and recording of continuously varying values in the real world, such as  sound, light, and size. The measurements correspond proportionally to other values, such as electrical  voltage. Film cameras are anal...