SCIENCE AND TECHNOLOGY

All Science One Spot

Tuesday, March 19, 2019

What is at the bottom of the ocean?

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An ocean is a body of water that composes much of a planet's hydrosphere. As the world ocean is the principal component of Earth's hydrosphere, ocean is also called sea. 
The ocean covering approximately 71% of Earth's surface and 90% of the Earth's biosphere.The ocean contains 97% of Earth's water, and oceanographers have stated that less than 5% of the World Ocean has been explored. The total volume is approximately 1.35 billion cubic kilometers (320 million cu mi) with an average depth of nearly 3,700 meters (12,100 ft).
95% of the ocean is unexplored. What is down there? In 1960, Don Walsh and Jacques Piccard travelled around seven miles down, to the deepest part of the ocean, in search of this answers. Their voyage pushed the boundaries of human endeavour but gave them only a glimpse of life on the seafloor. It is so difficult getting to the bottom of the ocean that for the most part we have to resort to sending unmanned vehicles as scouts. The discoveries we’ve made so far from bizarre fish such as the barreleye, with its transparent head, to a potential treatment for Alzheimer’s made by crustaceans are a tiny fraction of the strange world hidden below the waves.⬲

Friday, March 15, 2019

Why is the sky blue?

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The sky has no true colour. While most of the time it is blue, sometimes it is not. The sky looks blue but really it is made up of all the colours of the rainbow. Each of these rainbow colours has a different wavelength. Some of these are smoother while others are choppy. Blue light waves travel in short, choppy waves. Like each of the other colours, blue light waves are scattered and reflected as they enter Earth's atmosphere and collide with gases and other particles. Because the colour blue has the shortest wavelength, it collides with nearly everything in its path and is scattered about the sky. This is why the sky appears blue. The sky can often be pale blue, gray, or even white. The reason for this is pollution. Some of the example and cause of different colours of sky are as follows.

Deep blue sky :

This colour of sky means the sky is very clean. This often occurs when a cold front brings clean air from the north, or when clean air from the ocean moves onto land.

Medium blue sky :

This colour of sky means there is lots of water vapor in the sky. It can also suggest the presence of sulfur from coal-burning operations. It may be caused by the chemical emissions of plants and trees.

Pale or milky-white sky :

This colour of sky indicates considerable air pollution from coal-burning power plants or chemical power plants. This condition often occurs in the summer when the air is still. There are also natural causes, such as volcanic activity or ocean plankton etc.

Gray or dark gray : 

This colour of sky cause of  the smoke from forest fires or agricultural burns. 

Brown or brownish orange : 

Emissions from cars and trucks can cause a layer of this colour to form over the horizon. The main component of this kind of pollution is nitrogen dioxide.

Thursday, March 14, 2019

Do Mosquitoes Feel the effects of alcohol?

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In many parts of the world there is risk of a mosquito bite mainly in warms parts. But what effect does the booze in your blood have on the insect itself?


As the Journal of the American Mosquito Control Association found in 2002,  the likelihood of being bitten by a mosquito appears to be dramatically increased if you drink alcohol. The study a small one, involving only 13 subjects showed those who had drunk a bottle of beer were more likely to have mosquitoes land on them to feed.
why mosquitoes appear to be more attracted to drinkers, no one is quite sure about it. We do know mosquitoes home onto humans thanks to two chemicals we exhale when we breathe carbon dioxide and octanol. (Octanol: It a secondary alcohol created from the breakdown of linoleic acid, is also commonly known as “mushroom alcohol” because it’s the compound that helps give mushrooms their taste.)
Another study also found mosquitoes were attracted to those who had been drinking. The ethanol in the alcohol we are drinking and that we are excreting in minute quantities through ours sweat may be signal to the biting insects that there’s a meal nearby.
The level of exhaled carbon dioxide and body temperature had no effect on human attractiveness to mosquitoes. Despite individual volunteer variation, beer consumption consistently increased attractiveness to mosquitoes,  the report’s findings noted
If we hungry and we are walking around, More likely to make we go in one direction is the smell of food that strong smell of Mo:Mo  for instance. Now we might not eat the Mo:Mo, but it shows us there’s food around there. 
The alcohol may ring the dinner bell, The main factors attracting the mosquitoes towards us are probably entwined in your genetic make-up. Simply saying no to an ice-cold beer probably won’t save you from their attentions. And on the plus side, at least with a drink or two, you may not feel the itching quite so much.