Facts Inspiring

2022-05-11 14:30:08 Open / Comment

2022-05-11 08:54:58 Why Do Humans Sweat?

While most other mammals can sprint faster than we can (a perk of having four legs), humans have basically evolved to be endurance runners. The theory is that this made us more efficient hunter-gatherers. So what does this have to do with sweat? Well, if it weren't for how efficiently we produce and dissipate sweat, our ancestors wouldn't have been able to run long distances while hunting and we probably wouldn't be able to do things like run marathons.

Sweating gets a bad rap, and, sure, it is sort of gross. But sweating is vitally important for body temperature regulation and your overall health. A person's internal body temperature generally hangs around 98 degrees Fahrenheit. There's flexibility here, but if your body gets too hot, whether it's due to the temperature outside, being physically active or having a fever, bad things can happen, for instance, heat stroke. Fortunately, your body has very sophisticated mechanisms for sensing and regulating body temperature.

As soon as your body's internal temperature starts rising, your hypothalamus (a small region in your brain) tells eccrine sweat glands distributed all over your body that it's time to start cooling you down by producing sweat. Cooling down, however, isn't as easy as this sweat just dripping off of you. Some of this sweat has to evaporate off of your skin for this process to actually work. That's because cooling your body via sweating relies on a principle of physics called "heat of vaporization."

It takes energy to evaporate sweat off of your skin, and that energy is heat. As your excess body heat is used to convert beads of sweat into vapor, you start to cool down.

The other trade off here, though, is that you also lose water as you sweat and water is critically important for just about every organ in your body. This means that when you're sweating, you also need to make sure you're drinking plenty of water. so you can replace the water you lose with water you can use. Open / Comment

2022-05-11 08:54:57 Open / Comment

2022-05-09 14:30:22 What is Carbon Footprint?

Carbon footprint, amount of carbon dioxide emissions associated with all the activities of a person or other entity (e.g., building, corporation, country, etc.). It includes direct emissions, such as those that result from fossil-fuel combustion in manufacturing, heating, and transportation, as well as emissions required to produce the electricity associated with goods and services consumed. In addition, the carbon footprint concept also often includes the emissions of other greenhouse gases, such as methane, nitrous oxide, or chlorofluorocarbons (CFCs).

The carbon footprint concept is related to and grew out of the older idea of ecological footprint, a concept invented in the early 1990s by Canadian ecologist William Rees and Swiss-born regional planner Mathis Wackernagel at the University of British Columbia. An ecological footprint is the total area of land required to sustain an activity or population. It includes environmental impacts, such as water use and the amount of land used for food production. In contrast, a carbon footprint is usually expressed as a measure of weight, as in tons of Carbon dioxide or Carbon dioxide equivalent per year. Open / Comment

2022-05-09 14:30:22 Open / Comment

2022-05-09 08:30:43 Why Earth Pin of three Pin plus is Longer and Thicker than other?

The earth pin on a plug is longer than the live and neutral pins. This means the earth pin is the first to connect and the last to disconnect.

When inserting the plug, the earth connection is made before the current carrying contacts of the plug become live.
When withdrawing the plug, the current carrying contacts shall separate before the earth connection is broken.
Thus, the earthing connection is always maintained to improve safety.
Many wall sockets have safety shutters (see image) on the live and neutral lines to prevent children from inserting conducting materials which may result in electric shock. Insertion of a longer (earth) pin helps in opening the shutters, facilitating the insertion of other two pins. These are called Earth-pin operated shutters.
Though it is impossible to insert the plug into the socket upside down, one may try to insert the plug top in a misaligned position (for e.g. trying to insert the earth pin into the phase socket with the other two pins further down out of the socket). Hence, the earth pin is made thicker so that even by mistake it cannot be inserted into the live or neutral hole of the socket. This prevents earth pin from establishing an electrical contact with the live termi Open / Comment

2022-05-09 08:30:38 Open / Comment

2022-05-06 14:30:47 What Is Molting Process Of Crabs?

Molting is an inherent cyclic process that occurs in all crustaceans, as a crab grows its hard exoskeleton (shell) becomes too small for its body and it must grow a new one. The process of replacing the exoskeleton is called molting.

The molting cycle is an extremely complex process that is normally divided into 4 main stages: inter-molt, pre-molt, ecdysis (shedding), and post-molt. In addition, it is a very stressful and dangerous process for the crab that can take up to several hours and requires a lot of energy.

The exoskeleton is hard and rigid. So, it does not grow, it cannot grow. Therefore, crabs must shed their old exoskeletons to make room for new ones. Unfortunately, it is not that easy. Similar to other crustaceans, in crabs, the molting process is controlled by environmental and endocrine hormones, which are located in their eyestalks. Open / Comment

2022-05-06 06:08:40 What Is The Technology Behind Cellular Data?

While the technicalities of cellular data technology may be a bit difficult to memorize, the overall concept of how it works is easy to understand. To enable a wireless connection, cellular data technology lets it communicate with other devices through certain radio frequencies.

The data you send or receive through a mobile network is transmitted to or from a central hub or station known as cells. One cell covers certain geographical areas, and these cells overlap to effectively transmit your data and have a wider reach. Ultimately, as long as your mobile network carrier has cell towers that cover a certain area, cellular data remains to be available to you.

The world has been using cellular data network technology for decades now, and there are no signs that it’ll stop soon. As simple cellular phones evolved to today’s smartphones, and as our needs changed from simple calls and texts to connecting to the internet, cellular network technology has managed to adapt. Open / Comment

2022-05-06 06:08:36 Open / Comment