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Welcome!




Welcome to Nolver's Science Corner! If you would like to read my blog, visit my website on Nolver's Cozy Corner. This page is dedicated to people who are into scientific subjects. Don't hesitate to be a member of this page!

For tags, visit my website on Nolver's Pretty Tags, for PSP tubes, visit my page on Nolver's Cool PSP Tubes. For my personal blog, visit my page on Nolver's Room.

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Wednesday, November 25, 2015

New Horizons Finds Blue Skies and Water Ice on Pluto

Pluto’s Blue Sky: Pluto’s haze layer shows its blue color in this picture taken by the New Horizons Ralph/Multispectral Visible Imaging Camera (MVIC). The high-altitude haze is thought to be similar in nature to that seen at Saturn’s moon Titan. The source of both hazes likely involves sunlight-initiated chemical reactions of nitrogen and methane, leading to relatively small, soot-like particles (called tholins) that grow as they settle toward the surface. This image was generated by software that combines information from blue, red and near-infrared images to replicate the color a human eye would perceive as closely as possible.

Read more: http://buff.ly/1RvZq6t

Monday, September 21, 2015

Cosmetic, Plastic and Reconstructive Surgery


We often hear about these surgical procedures through the media, especially in regards to celebrities. Most people generally think of cosmetic surgery and plastic surgery being the same exact thing. There is a lot of further confusion on the subject of reconstructive surgery, which is more commonly associated with more serious medical needs. A little bit of exploration into the subject matter, however, reveals pertinent information. Namely, not a single one of these procedures falls into precisely identical categories, and each term has its own proper, relevant application and usage.

Read more on: http://www.scientificanimations.com/distinguishing-the-terms-cosmetic-plastic-and-reconstructive-surgery/


Sunday, August 23, 2015

Scientists build the first magnetic wormhole


Scientists have recently published a paper at Scientific Reports journal on making of the first magnetic wormhole. Wormhole are cosmological objects that have the ability to connect two distant regions of the universe with the aid of a magnetic tunnel connecting the two regions. Just like physical tunnel connects two places which are otherwise uncommunicable, similarly a magnetic wormhole connects two regions via electromagnetic tunnel. As simple as the idea might seem aparently, it’s equallt difficult to achieve it in real time. The scientists had a tough time in accomplishing the magnetic wormhole inside a lab.

Read more on http://www.techentice.com/scientists-builds-the-first-magnetic-wormhole/.


Friday, July 17, 2015

How to Use Plastic Water Bottles and Bleach to Create LIGHT!


The innovative mechanic has been using plastic water bottles filled with water and a splash of bleach to light up dark rooms since 2002, and now the idea has spread across the world. It is predicted that by the end of the year, over a million homes will be fitted with the invention and be lit up – without any electricity!

Monday, June 8, 2015

How to get rid of a sore throat fast


Fill a small teacup with warm boiled water and add 2 tablespoons of honey, a little lemon juice and a bit of cinnamon/gingerbread in it. Stir and drink it. It's tasty and your sore throat is gone within half an hour.



Friday, May 1, 2015

Why are white people more milk (lactose) tolerant?


Ever notice why white people have far more tolerance for milk, being the most lactose tolerant?
Below it will be explained why this is the case.

Because white skin reflects sunlight, so the amount of vitamin D that's synthesized in the body will be reduced and this automatically decreases the calcium levels in the blood. To compensate this, the body depletes calcium from the bones, leaving the bones porous and weak. This on itself causes the bones susceptible to osteoporosis, so the body always needs calcium because it is always robbed from it.

People, after reaching a certain age, actually no longer need milk and should be waned off of it.  In the wild, you won't see a full grown animal still getting milk from its mother. Dark skinned people actually don't have to drink milk.  They can get all the Vitamin D they need if there is enough sunshine, whereas Caucasians need supplements to help them make up for the Vitamin D deficiency.  This is why most people who are lactose intolerant are dark skinned and why people with fair skin are not only the most lactose tolerant, but do need Vitamin D the most.

In the supermarket, in many products, calcium has been added from orange juice and other fruit juices to breakfast cereal. All that extra calcium fortification is to aid Caucasians in their inability to maintain healthy vitamin D levels in their bodies.

In Europe it is said that dark skinned people need extra Vitamin D supplements, because the sun isn't shining so much in Europe and therefore they cannot make enough Vitamin D in their body. This is a wrong assumption that it only counts for them, because Vitamin D is being synthesized by sunlight and that counts for everyone, not only dark-skinned people so that means Vitamin D levels for people living in Europe  or in other colder climates are lower than in people who live in warmer climates.

It is most commonly known that there is not much sunshine in Ireland. This is what Wikipedia says:

"In Ireland, almost three-quarters of adults are low vitamin D intakes (3.2 micrograms of food)."

 "Food with added vitamin D are the main source of vitamin D in the diet. In the United States it is since the 1930s that  Vitamin D is added to milk products, causing rickets to be virtually eliminated."

This is why Europe also uses standards for added calcium,  in order to maintain a healthy population.


Source: stewartsynopsis.com

Monday, April 13, 2015

This is what happens if you stick a knife in a mobile phone battery

English:
 Watch what happens when a lithium-ion (Li-ion) battery of a mobile phone is pierced with a knife. A person will demonstrate this in the video with a kitchen knife. This will create multiple stab holes in the battery. Once the lithium comes in contact with air, there will be a chemical reaction, gas will escape and eventually ignite, causing the battery to explode. Do not do this at home, dangerous!
 
Dutch:
Kijk wat er gebeurt als je een lithium-ion (Li-ion) batterij van een mobiele telefoon doorsteekt met een mes. Een persoon zal het in de video demonstreren met een keukenmes. Hierdoor zullen meerdere steekgaten in de accu ontstaan. Als de lithium eenmaal in contact komt met lucht, zal er een chemische reactie optreden, gas zal ontsnappen en uiteindelijk vlam vatten, waardoor de batterij zal exploderen. Doe dit thuis niet na, levensgevaarlijk!



Monday, March 23, 2015

Africa was rich before European slavery


The peoples of West Africa had a rich and varied history and culture long before European slavers arrived. They had a wide variety of political arrangements including kingdoms, city-states and other organisations, each with their own languages and culture.

The empire of Songhai and the kingdoms of Mali, Benin and Kongo were large and powerful with monarchs heading complex political structures governing hundreds of thousands of subjects. In other areas, political systems were smaller and weaker, relying on agreement between people at village level. As in 16th century war-torn Europe, the balance of power between political states and groups was constantly changing.

Art, learning and technology flourished and Africans were especially skilled in subjects like medicine, mathematics and astronomy. As well as domestic goods, they made fine luxury items in bronze, ivory, gold and terracotta for both local use and trade.

West Africans had traded with Europeans through merchants in North Africa for centuries. The first traders to sail down the West African coast were the Portuguese in the 15th century. Later the Dutch, British, French and Scandinavians followed. They were mainly interested in precious items such as gold, ivory and spices, particularly pepper.

From their first contacts, European traders kidnapped and bought Africans for sale in Europe. However, it was not until the 17th century, when plantation owners wanted more and more slaves to satisfy the increasing demand for sugar in Europe, that transatlantic slaving became the dominant trade.



Source: http://www.liverpoolmuseums.org.uk


Monday, February 16, 2015

Why does the male beard turn grey sooner than the hair on the head?


The answer is simple, the beard hair grows faster. It seems strange, but going grey is the result of a depletion of pigments in your hair follicles. Since the hair on your face grows much faster than that on your head, the follicles that hold color are depleted much faster.



Source: http://www.quora.com


Thursday, January 15, 2015

Are Black & White Colours?



The answer to the question - "Are black and white colours?"  - is one of the most debated issues about colour. Ask a scientist and you'll get a reply based on physics: “Black is not a colour, white is a colour.” Ask an artist or a child with crayons and you'll get another: “Black is a colour, white is not a colour.” (Maybe!)

Colour Theory 1 - Colour as Light 


Red Green Blue 

The question:
Are black and white colours when generated as light?
 The answers:
1. Black is the absence of colour (and is therefore not a colour).

Explanation:
When there is no light, everything is black. Test this out by going into a photographic dark room. There are no photons of light. In other words, there are no photons of colours.

2. White is the blending of all colours and is a colour.

Explanation:
Light appears colourless or white. Sunlight is white light that is composed of all the colours of the spectrum.  A rainbow is proof. You can't see the colours of sunlight except when atmospheric conditions bend the light rays and create a rainbow. You can also use a prism to demonstrate this.

Fact: The sum of all the colours of light add up to white. This is additive colour theory.

Colour Theory 2 - Colour as Pigment or Molecular Colouring Agents

 

alt
 Red, Yellow, and Blue
(The primary colours of pigments in the art world)

alt
 Cyan, Magenta, and Yellow
(The primary colours of inks in the printing industry)



The question:
Are black and white colours when they exist as pigments or as molecular colouring agents?

 The answers:

1. Black is a colour. (Chemists will confirm this!)

Explanation:
Here's a simple way to show how black is made: Combine all three primary colours (red yellow and blue) using a liquid paint or you even food colouring. You won't get a jet black, but the point will be clear. The history of black pigments includes charcoal, iron metals, and other chemicals as the source of black paints.

Therefore, if someone argues that black is the absence of colour, you can reply, “What is in a tube of black paint?” However, you must add the fact that black is a colour when you are referring to the colour of pigments and the colouring agents of tangible objects.

2. White is not a colour.

... but .... in some cases you could say that white is a colour.

The grey area:

Technically, pure white is the absence of colour. In other words, you can't mix colours to create white. Therefore, white is the absence of colour in the strictest sense of the definition. However, when you examine the pigment chemistry of white, ground-up substances (such as chalk and bone) or chemicals (such as titanium and zinc) are used to create the many nuances of white in paint, chalk, crayons - and even products such as Noxema. It's worth noting that white paper is made by bleaching tree bark (paper pulp). Therefore, you could say that white is a colour in the context of pigment chemistry.

The question:
Are black and white colours?

 The answer:

1. Black is not a colour; a black object absorbs all the colours of the visible spectrum and reflects none of them to the eyes.


The grey area about black:

A black object may look black, but, technically, it may still be reflecting some light. For example, a black pigment results from a combination of several pigments that collectively absorb most colours. If appropriate proportions of three primary pigments are mixed, the result reflects so little light as to be called "black." In reality, what appears to be black may be reflecting some light.
In physics, a black body is a perfect absorber of light.


2. White is a colour. White reflects all the colours of the visible light spectrum to the eyes.


In conclusion
The colours we see are simply a degree of how much of this colour present in light is reflected. To be completely accurate, a colour reflects the wavelengths in the NM range that our retinal cones respond to.

The medium is the process of reflection of the wavelength of the colour.
The receiver is our eyes which receive the wavelength of the colour.

So, based on the explained theories above, there is one remaining question: if black  is not a colour because it absorbs all colours, why are black people referred as coloured and white as non-coloured??


Source: http://www.colormatters.com