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Food Tablet

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Food tablet The"food tablets" for soldiers may seem futuristic supplements, but the reality is that military rations are more complex and typically consist of Meals, Ready-to-Eat (MREs).  These are self-contained, individual food packets designed for field conditions where standard meals aren't available. MREs include a variety of components like entrees, bread, dessert, and a flameless ration heater. They are designed to be calorie-dense and nutritious, providing soldiers with the energy they need in combat or training. Types of ration  Type of ration for US Army are - C-Rations (Combat Rations) These were the standard operational rations for many years, consisting of canned, ready-to-eat meals. They were used from WWII through the Vietnam War and contained items like canned meats, biscuits, and coffee.  K-Rations These were designed as emergency or assault rations for troops on the move. They were lighter and more compact than C-rations, intended...

Zero-gravity on Earth

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Zero-gravity on Earth Microgravity, which is the condition of relative near weightlessness, can only be achieved on Earth by putting an object in a state of free fall. NASA conducts microgravity experiments on Earth using drops towers and aircraft flying parabolic trajectories.  Drop tower NASA, Zero Gravity Research Facility at Glennwas originally designed and built during the space race era of the 1960s to support research and development of spaceflight components and fluid systems in a weightless environment.  The Zero Gravity Research Facility provides a near-weightless or microgravity environment for a duration of 5.18 seconds. (Mezzanine view of the drop vehicle and release mechanism being positioned over the vacuum chamber with a technician signaling the crane operator in the Zero Gravity Research Facility.)  This is accomplished by allowing the experiment vehicle to free fall, in a steel vacuum chamber, a distance of 432 feet (132 meters).  ...

HOPE in Ladakh

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HOPE in Ladakh  ISRO's analogue space mission kicks off at Ladakh's Leh, to simulate life on Moon, Mars. Why HOPE? Selected crew will take turns to inhabit the station and will undergo extensive physiological and psychological studies to assess human adaptability and resilience in conditions simulating deep space environments, says Protoplanet, which has launched the station and has ISRO among its collaborators.   Protoplanet , a Bengaluru-based company involved in space science popularisation, launched human outer planet exploration (HOPE) in Tso Kar, Ladakh, according to a statement from the compan The insights gained from these studies will be instrumental in developing robust protocols and technologies for sustained human presence beyond Earth ,” according to Protoplanet. Why Leh, Ladakh ? The high-altitude and cold desert-like conditions here serve as an “exceptional analogue site, closely mimicking the geological and environmental conditions found on the Moo...

The Hunter, it's dog and The Bull

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The Hunter, it's dog and The Bull Orion Constellation - The easiest way to find Orion is to go outside on a clear night and look for three bright stars close together in an almost-straight line, which represents Orion belt.  Orion's seven brightest stars form a distinctive hourglass-shaped hunter  body. His head is marked by an additional eighth star called Meissa,  Canus Major Constellation First locate Orion, then  follow the three stars of Orion's belt downwards to the left. This line will lead you directly to Sirius, the brightest star in the night sky and the heart of Canis Major. Once you've found Sirius, you can discern the rest of the constellation's shape, which resembles a dog with its head, body, legs, and tail outlined by other bright stars. Taurus Constellation  You can locate Taurus by first finding Orion's Belt, then drawing an imaginary line through its three bright stars towards the northeast, which will lead you to Aldebaran, the brightest st...

Light Pollution

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Light Pollution Electric light can be a beautiful thing, guiding us home when the sun goes down, keeping us safe and making our homes cozy and bright.  But excessive or inappropriate use of outdoor artificial light, is affecting human health, wildlife behavior, and our ability to observe stars and other celestial objects. There is a global movement to reduce light pollution, and everyone can help.   Astronomers are particularly concerned with sky glow pollution as it reduces their ability to view celestial objects. Impact of Artificial Light on human Artificial light can wreak havoc on natural body rhythms in both humans and animals. Nocturnal light interrupts sleep and confuses the circadian rhythm—the internal, twenty-four-hour clock that guides day and night activities and affects physiological processes in nearly all living organisms. . Animals are Lost and Confused, Too Studies show that light pollution is also impacting animal behaviors, such as migration pa...

Kalaripayattu - The Martial Art of India

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Kalaripayattu - The Martial Art of India  Meaning The word kalaripayattu is a combination of two words, namely, ‘kalari’ and ‘payattu’ which mean training ground and fight. The practice emphasizes flexibility, balance, and fearlessness, aiming to transform the individual through physical and mental discipline. Parasurama who was an avatar of Lord Vishnu is believed to be the founder of martial arts in India. Kalaripayattu is believed to have been founded by Parasurama.  Popularity (9th to the 13th centuries CE)  During the peak of its popularity, kalaripayattu was used as a code of combat by the South Indian dynasties. Kalaripayattu reach its zenith during the hundred years of war between the Cholas, Pandyas and Cheras. The constant fighting between the princely states helped the fighters in refining the art into a martial art form. Banned by British  Kalaripayattu, was banned by the British in the early 19th century, specifically in 1804 , due to concerns about it...

Honey Forever

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Honey Forever Archaeologists have been able to retrieve, from ancient Egyptian tombs that are over 3,000 years old, pots of honey which were perfectly preserved, was still edible.. Honey is one of nature's most fascinating gifts—a golden, viscous liquid that has been cherished for centuries.  But what truly sets honey apart is its incredible longevity.  The main reasons why it lasts so long:  1. Low Water Content Honey is a hygroscopic substance, meaning it has very little water content but can absorb moisture from the environment. Fresh honey contains only about 17-18% water, which is too low for bacteria and fungi to thrive. Without sufficient moisture, microorganisms cannot grow, preventing spoilage. 2. High Acidity Honey is naturally acidic in nature, ranging from 3.2 to 4.5 pH. This acidity doesn't allow most bacteria and pathogens to survive; hence, there is no possibility of spoilage. Gluconic acid, which results from the decomposition of nectar by bees, increases ...