Climate Science And The Microscope
Climate Science And The Microscope
Nowadays, there have been so many things in our lives affected by climate science. It is a constant force in our society. You can meet some kinds of it every where such as: the weather reports on the TV channels, and the analysis of weather patterns; hurricane and storm warnings for cities on the coast. Actually, climate science is essential to weather reports, yet it has other functions too. Climate science keeps an eye on global temperatures and the bigger picture.
Whether global warming is actually a reality is disputable. So climate science is needed to provide solid facts and educate people so the right decisions can be made. However, there is a lot of arguments raging around global warming and the effects it is or isn’t having, and it seems that even the work climate science is doing isn’t shining enough light to really illuminate this topic for us.
There are solid facts and measurable changes being measured by science of the increase in temperatures. However, what is not known is how much man is responsible for those weather changes.
There are some foundational points, however, that have been proved. Temperatures in the sea and average temperatures of near-surface air have been shown by climate science to have increased. Of course, the effect of greenhouse gases, as well as carbon dioxide, also plays a part, as they seem to surround the earth’s atmosphere. In a way, this forms a kind of blanket that traps the solar radiation, which cannot then escape Earth’s atmosphere.
Carbon dioxide emissions are actually unavoidable, and are a normal consequence of life on earth, and climate science has proved that they are natural waste products.
However, mankind is only responsible for the slightest levels of carbon dioxide in the bigger picture (just one percent). For us to really understand what global warming is all about, and to understand the arguments, further study and concrete facts are needed.
In gathering this evidence, the history and the present need to be taken into account when studying the climate. This will make the job of climate science easier, which is discovering the true extent of damage global warming is or isn’t having, and what relationship it has to the changing weather patterns. More consistent research is needed, so that more accurate information can be discovered and the right conclusions drawn.
Climate science will no doubt continue to be an umbrella science for researching global warming and weather changes. Everyone holds out hope that the right facts will be found, so that we can take positive steps for helping the environment. It will go a long way to soothing the arguments, and motivating everyone to create some future goals and ideals we can work toward making this planet a green, healthy, safe place to live for the generations to follow.
Terje Brooks has written articles online for many years and likes to write about environmental issues, home improvement, families and other topics. He has written solar water panel reviews on his solar electric panels site.
Question by babalabaloo: How do scanning electron microscopes work? Please help?
Best answer:
Answer by ckm1956
Basically, a stream of high energy electrons is used to raster scan the sample. Here’s the full monte…
http://en.wikipedia.org/wiki/Scanning_electron_microscope
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Portable Handheld Microscope
Portable Handheld Microscope
Hand Held Microscopes are used for viewing objects that are too tiny for the naked eyes. They are made by magnifying glasses which are educational and fun to use. The word ‘microscope’ is derived from the two Greek words, mikros, which means ‘small’ and skopein, which means ‘to look’ or ‘see’. The early ‘occhiolino’ – ‘little eye’, as Galileo Galilei called it, was made back in 1590 in a Dutch city known s Middlelburg. Two men, both eyeglass makers, have been credited with making that early microscope; Hans Lippershey and Hans Janssen. But it’s the 1960s that saw the usage of the microscope more extensively in research, start with Italy followed by Holland then England. The use of microscopes runs through different fields, but they are mostly used in microscopy, which is the science of studying microscopic objects, mostly in government and school laboratories.
There are several kinds of microscopes, the most common being the optical microscopes, the first to be invented, which uses light to image the object under study.
The optical microscope comes in two categories, the big stand alone microscopes which are mostly used in science laboratories, and the hand held microscope which is pocket size and can be carried around. The hand held microscopes, also referred to as portable microscopes, are mostly optical but lately there are digital ones equipped with digital cameras and are designed to use charged batteries which if fully charged can last for days without fail.
The hand held microscopes though referred as miniatures have several benefits, among them include; they compact, portable, occupy small space, come with trivet stand whose legs are removable and adjustable, detachable base plate, at least one lighting source, the objective lens is compatible and a digital camera. They also take snapshots which can be uploaded to a computer through their USB port, all of which enhances their performance and increases their usage.
The invention of such a mini high meticulousness portable microscope, which are self contained has increased awareness and the usage of microscopes, since now scientists can carry them to the field and work on objects, make their recommendations and write their reports without having to report to the laboratories. They are very applicable especially in the military field and are low priced ranging from $ 10 to $ 65, so many people can access and benefit from them. More school kids own and know how to operate microscopes unlike the old days when one would only come in contact with a hand held microscope when he/she goes to college.
However, the mini microscopes comes with some drawbacks, some of the hand held microscopes have narrow magnification and resolution, mostly use plastic optics and are not applicable in huge studies, with large objects which cannot be sliced thinly. These drawbacks have made them to be overlooked in the main field of research, the scientists seeing them as stylish objects rather than professional tools and are mostly used by young researchers who are just gaining interest in science. The research community only hopes that the future generations of these mini hand held microscopes come with enhanced features to increase the efficiency of their usage.
Author writing about Pocket Microscope. More information about Pocket Microscope, Stereoscopic Microscope and Hand Held Microscopes, please visit their website: http://pocketmicroscopeshop.com/
Question by Carlitos: Atheists: How do these electron microscopes work?
I asked a question about why atheists have faith in the electron even though they cannot see them and was told that you can see them with a special microscope (which I still doubt).
So how exactly does this work?
Best answer:
Answer by Jon L
An electron microscope doesn’t see electrons.
It uses electrons to see other things.
http://en.wikipedia.org/wiki/Electron_microscope
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Reed Diffusers – An Explanation Of What They Are And How They Work
Reed Diffusers – An Explanation Of What They Are And How They Work
Article by Alex Muir
Reed Diffusers And How They WorkThe expression “home fragrances” is a relatively recent introduction to everyday language. It encompasses a variety of different products, the most well known of which – and certainly the most popular – is the scented candle. But you can also choose from room sprays, air fresheners, incense sticks and, increasingly commonly, reed diffusers. Diffusers are fast becoming a convenient alternative to scented candles, so we thought we would spend a few moments explaining a little about them to the uninitiated.So, what exactly is a reed diffuser? They are usually made up of three distinct elements: a bottle or container, scented oil, and the rattan reeds which distinguish the diffusers from other home fragrancing options. The bottles or containers are available in an assortment of shapes and sizes, from a simple clear jar to something much more ornate. The fragrant oil is placed in the jar, followed by the reeds. The oil travels up and through the reeds before being distributed throughout the surrounding atmosphere. The size of diffuser does not necessarily determine its potency, but you may very well choose a small diffuser in a bathroom whereas a reception room in a doctor’s office may require something larger to ensure the fragrance fills the entire room. Reed diffusers are easy to use. They are a safe, convenient alternative to candles as they do not require a flame to work and, once set up, are virtually maintenance free. To start using your diffuser, simply remove the packaging and set all the constituent parts on a flat surface. Then, uncap the bottle of oil and pour it into the empty jar or else simply uncap the container in which the oil is already housed. Then all you have to do is place the reeds into the filled container and enjoy the delightful aroma. The reeds have microscopic straw-like capillaries which when immersed in the oil soak it up and carry it along the whole reed. Please be aware that all reed diffusers are not the same. Put simply, when it comes to diffusers, as with scented candles, you get what you pay for. Premium quality scented candles and diffusers use high quality fragrant or essential oils which are obtained from plants, barks and other botanicals, meaning you receive a product which produces a natural subtle aroma which lasts much longer than cheaper alternatives made with synthetic fragrances. Another consideration is the reeds themselves. To work properly you must use rattan reeds which have the correct internal structure to allow the oil to diffuse properly. Cheap diffusers use wooden sticks which simply do not work and will leave you with a feeling of deep disappointment as well as empty pockets.Where can you use reed diffusers? Reed diffusers are perfect for using anywhere around the home, but because they do not rely on a flame to operate they are also eminently suitable for use in the workplace. At home they are perfect for using in reception areas to greet visitors with a lovely aroma as they enter your home, as well as in bathroom and, of course, the bedroom where diffusers with the natural fragrance of plants such as lavender or chamomile can help you relax and aid restful sleep.But basically, wherever you have a room, then you can use a reed diffuser. Shop owners use them to help create a pleasant and relaxing shopping experience. Reed diffusers can be found in waiting rooms of solicitors and dentists, where they can help clients relax. They are recommended by estate agents for use in the home before you have viewers over to inspect a house for sale. The list is virtually endless. Why not try one yourself today?
The author is owner of The Scented Candle Store where you will find a range of luxury home fragrances including candles, scented candles and fragrance diffusers from leading brands.
Question by bookworm: How to scanning electron microscopes and transmission electron microscope work?
i’m studying them in my science class, however the textbook is out of date and all the sites i’ve looked up give me various, different answers.
does anyone know a not too complicated way to explain how they work?
Best answer:
Answer by trb0257
The old SEM i used in the 80′s, a bulb which high currents passes through, providing a high energy x-ray source. the chamber is vacuum of all air, and supercooled with liquid nitrogen. the x-rays pass through a series of magnetic rings to narrow the beam, which is rasped, (moved back and forth like the old TV’s CRT), of a specimen. the specimen must be made non-conductive, by sputter coating it with graphite or other materials. A SEM, gives us a good visual of the surface of a specimen, and when the specimen is hit with narrow focused electron beam between 100 and 300 thousand volts, it gives off secondary x rays, which are picked up by crystal detectors (EDXRA). these detectors can give counts of secondary x-ray wavelengths specific to elements. different type detectors can pick up different elements, because some wavelengths overlap. advantage, SEM can take a large specimen, sample may only may need little preparation,
without the vacuum, air molecules bounce the beam, and if too much air, it can have a arch of electrons like a bolt of lighting.
http://en.wikipedia.org/wiki/Scanning_electron_microscope
a TEM has much higher magnification, is designed to look through very thin specimens, to get not surface as a SEM does, but to look inside a cell for example, , and different type of analysis can be done, we used crystal diffraction, see crystal structure at atomic level on asbestos fibers. the advantage, very high magnification, can see inside specimen in 3-D, the drawback, it takes long time to get a sample to the level, thin enough, it can be looked at in a TEM
http://en.wikipedia.org/wiki/Transmission_electron_microscopy
Hope this helps.
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Categories: How Microscopes Work Tags: Diffusers, explanation, Reed, They, work
