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Information Science and Libraries
Library and Information Science (LIS) is a discipline wherein the perspectives, practices and tools of management, education and information technology are applied to libraries. LIS is an integration of Library Science and Information Science.
1,171 Questions
Why is tin foil shiny on one side?
i just watched your question on modern marvels episode is called aluminum, from what i can recall during the operation they put this big humongous spool of aluminum on a spindle it is very thick as it is compressed to desired specification few rollers compress the aluminum and the rolled side is the dull side leaving the opposite side shiny which is the non rolled side hope this helps or you can go to modern marvels and look up this episode on aluminum.
If you want to cook something you put the shiny side inwards, to radiate the heat inwards and your food cooks quicker and if you want to keep food cool, you put the siny side outwards to reflect the heat out wards.
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According to the manufacturer, it does not matter which side faces the food.
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They're not going to tell you if they make something that's bad for your health and they make zillions out of it ?
The composition of aluminum foil is NOT 100% pure aluminum, as many people believe. The dull shiny side is caused by a reaction when it comes in contact with air. The aluminum foil reacts with oxygen in the air to form a thin layer of Aluminum Oxide on one side of the foil. Because rolls of aluminum foil are generally rolled tightly, the inner side of the aluminum foil is not exposed to the air as much, and it remains shiny. Aluminium is made from Bauxite a sedimentary rock formed in weathered volcanic rocks. When a volcanos erupts Fluorine gas escapes, the toxic yellow element is corrosive and is 'the most reactive' of all known elements known to man.
It is also the strongest neg charged anion, F- . Like a magnet is artacted to ferrous metals, mainly iron and steel at one end it is the energy at the other end.. F- is the neg energy in atomic struture that forms some interesting minerals though thermodynamics to make Fluorides such as fluorine-containing minerals, fluorite, Fluorapatite, Cryolite and is highly reactive with calcuium to form calcium fluoride. Most of these minerals that present in bauxite! Bauxite mined then crushed, then screened and stockpiled, ready for delivery to an alumina plant. In some cases, ore is upgraded by washing, size classification, and separation of liquids and solids as clay and silica. There are no dobt varied amounts of F- ion in Aluminium as it would depend on the amount they collected in the Bauxite..
In short, the composition of aluminum foil is aluminium (Al) AND some aluminium oxide which contains the tiny F- anion.
What is a homogeneous mixture whose particles are too small to reflect or scatter light?
A solution is a homogeneous mixture whose particles are too small to reflect or scatter light. A colloid is a heterogeneous mixture containing particles that are small enough to stay suspended but large enough to scatter light.
Rust is Simply oxidation.
It happens when Oxygen comes in contact with something and creates a chemical reaction.
This reaction creates "oxides".
Iron + oxygen = Iron oxide. (red rust on steel)
Aluminum + Oxygen = Aluminum Oxide. (Dull color on aluminum)
The way to stop rust is by preventing oxygen from reaching the surface. (creating a barrier between the surface and the atmosphere.) This can be done by plating the surface, or coating with a non-reactive substance like certain oils...
by: a twelve year old
What other species might be a variation of the Humpback Whale?
The blue, fin, minke, gray, and sperm whale. These whales are not only species that might be a variation of Humpback whales but are acknowledged to have interactions with Humpback whales.
The resources that organisations require before they can provide care services include
- Skilled staff
- Buildings (Including in-patient beds) and equipment
- Money to pay for running costs and staff wages.
Typhoon Haiyan in 2013 caused a scarcity of food and clean water in the Philippines. Electricity also became scarce in parts of the country.
Which season summer spring winter or autumn has the most number of days?
Summer has the most amount of days
Why does your skin turn pale when exposed to sunlight if it is suppose to be darker?
i have that problen 2 not every one has it though my nails also look like ethey have clear polish on it my friend thinks im a vampire ecasue i have really sharp teeth that can go through skin but i don'y know maybe its sensitive skin ot thin skin if your skinny
What is the phone number of the Poynette Area Public Library in Poynette?
The phone number of the Poynette Area Public Library is: 608-635-7577.
How ict might narrow the digital divide between rich and poor countries?
because you might need change the spots before.
Mathew's Theories of Knowledge Consumption-Productiontreat knowledge as a product for mass production, marketing, delivery and consumption- the basis of Knowledge Industries. Knowledge has both qualitative and quantitative aspects- high or low quality knowledge consumption or production; high or low quantity knowledge consumption production. There are two theories of knowledge consumption-production:
1. Mathew's Theory of Knowledge Consumption-Production Correaltion says that 'there exists a direct correaltion between high level (quality) knowledge consumption and production. Such kind of correaltion may or may not exist with regard to low level knowledge consumption, though knowledge is consumed at high quanitity.
2. Mathew's Stage Theory of Knowledge Consumption-Production identifies five major stages of knowledge consumption-production both qualitatively and quatatively. The very purpose of high level (quality) knowledge consumption is knowledge production. Knowledge producers are experts, professionals, researchers, decision-makers and etc.
In education, especailly higher education, high level knowledge consumption -production is not in-built in the system, but only an accidential phenomena. That is why;most of the univerities fail to produce people with expertise though they bring out thousands of Master's or Doctoral Degree holders without expertise or critical knowledge put into application. Professionals without going on consuming high quality knowledge turn obsolete and social liabilities.
The existing knowledge delivery systems- libraries (both conventional and digital), training programs, profesional assocaitions' conferences or workshops, specail lecturing, information systems, Internet or Web Searches, Data Mining, Knowledge Management and etc do not ensure high quality knowledge provision and consumption but limited to document delivery or information delivery that are time consuming and inefficient. As a result Education and Training and Research Programs are getting unproductive and highly expensive.
As a solution, Knowmatics- based Live Knowledge Banks have been proposed so that the cost, time and efforts of education and research can be cut short into ten per cent augmenting a five fold increase in efficiency and productivity.Mathew's Theories of Knowledge Consumption-Production is the basis of Knowmatics - Mathematics and Cybernetics of Knowledge that leads to the emergence of the New Generation Knowledge Industry.
Briefly explain Advantages and disadvantages a flexible exchange-rate system?
define exchange and whts its advantages and disadvantages
