What on earth are Electron Microscopes?
Electron microscopes use "dancing" electrons rather than light to illuminate an object or sample.
First developed in 1931 in Germany for laboratory use, it was not until 1965 that electron microscopes were available commercially.
The first electron microscopes were produced by RCA.
So what kinds of things can you see with electron microscopes?
Electron microscopes can reveal the following information.
1. Topography-What does the surface of the object or sample look like?
Is it smooth?
Rough?
Hairy? Hard or soft?
2.
Morphology-What are the shapes of the particles that make up the sample?
Are they round, oval, square, triangle, or hexagonal?
Is it
made of strong or weak particles?
3.
Composition-What elements or compounds is the object made of?
Does it have oxygen or hydrogen in it?
What is its' melting point or freezing point?
4.
Crystallographic Information-What does the arrangement of the atoms look like?
What are its properties?
Electron microscopes are capable of magnifying an object or sample up to one million times.
This magnification allows scientists to use the electron microscopes to
distinguish individual molecules.
How do electron microscopes work?
Electron microscopes work in the same way as lighted microscopes except that instead of light, electrons "dance" across an object or sample and illuminate it.
Due to this beam's strength, fine detail can be seen including variations in its surface and what it is composed of.
A vacuum is used to speed up the electrons until their wave-length is shorter than that of white light.
The shorter wave-length allows higher resolution which results in fine detail.
These "dancing" electrons are then focused upon the object or sample and they form an image on the photographic plate.
Although electron microscopes are quite advanced, one of the drawbacks to their use is that it cannot show movements that occur in living cells because of the high vacuum that is necessary to cause the electrons to pass across the sample.
There are two different kinds of electron microscopes.
The Transmission Electron Microscopes or TEM's create an image by passing electrons through the object or sample.
The Scanning Electron Microscopes or SEM's give more of a 3D look of an object or sample and the magnification is shown on a television screen which gives more depth detail.
To impress your friends with your knowledge of electron microscopes you need to learn just a few things.
First, electron microscopes use beams of electrons to illuminate an object or sample rather than light.
Secondly, electron microscopes can magnify an object or sample up to one million times which shows great detail.
And lastly, electron microscopes are used by scientists, engineers and many others.
.
Domestic Cleaning Advice: Computer Cleaning
The computer you use can get pretty dirty sometimes and that might reduce it's performance and reduce it's life time so here is some advice on how you can clean it up.The computer won't be well cleaned if you'll use alcohol cleaners, you'll need to use a hard surface cleaner, in concentrated solution in warm water.Cleaning the caseYou'll need a cloth that you'll wrung in the solution you chose. Use this cloth to wipe the casing and all the external parts (cabling, keyboard). Make sure you wash the cloth since the soil will be considerable. Excess water shouldn't be used and try not to let water go into the vents of the case. You will be able to clean between the keyboard keys by using damp cloth pushed between the keys with toothpicks.The following actions need to be taken every six months.Cleaning actions that should be taken periodically, every six monthsYou'll need to open the case and remove all the dust from it and from the vents.
You'll need to be very care full while cleaning...
Domestic Cleaning Advice: Computer Cleaning
Vacuum > Domestic Cleaning Advice: Computer Cleaning
Want that fresh outdoor smell that only Thermax vacuum fragrances or Rainbow vacuum fragances can give?
Kitchen odors are no match for the Rainbow vacuum fragrances and the Thermax vacuum fragrances.If your kitchen odors are just too much to take at times, then what you might need to do may be as simple as putting a few drops of the Fresh Apple or Mulberry fragrance that is made specifically for water based vacuum cleaners such as the Rainbow vacuums or the Thermax vacuums in either the Rainbow 2 quart water basin or the Thermax recovery tank.However, not everyone owns a Rainbow vacuum or even a Thermax vacuum because even though they are the two best water based vacuum cleaners on the market they are a bit pricey. This solution in this situation is to just put a few drops of one of these Rainbow fragrances in a pan of simmering water on your kitchen stove for a fresh smelling kitchen. It does the trick every time.Smelly Shoes? Just a few drops on the inside of your shoes will do the trick. Exiee Enterprises suggest the Fresh Linen fragrance for shoes.Another trick that some people do...
Want that fresh outdoor smell that only Thermax vacuum fragrances or Rainbow vacuum fragances can give?
Vacuum > Want that fresh outdoor smell that only Thermax vacuum fragrances or Rainbow vacuum fragances can give?
Domestic Cleaning Advice: Computer Cleaning
The computer you use can get pretty dirty sometimes and that might reduce it's performance and reduce it's life time so here is some advice on how you can clean it up.The computer won't be well cleaned if you'll use alcohol cleaners, you'll need to use a hard surface cleaner, in concentrated solution in warm water.Cleaning the caseYou'll need a cloth that you'll wrung in the solution you chose. Use this cloth to wipe the casing and all the external parts (cabling, keyboard). Make sure you wash the cloth since the soil will be considerable. Excess water shouldn't be used and try not to let water go into the vents of the case. You will be able to clean between the keyboard keys by using damp cloth pushed between the keys with toothpicks.The following actions need to be taken every six months.Cleaning actions that should be taken periodically, every six monthsYou'll need to open the case and remove all the dust from it and from the vents.
You'll need to be very care full while cleaning...
Domestic Cleaning Advice: Computer Cleaning
Vacuum > Domestic Cleaning Advice: Computer Cleaning
EMS and Berkeley Achieve Customer Acceptance of First Shipment of Partnership
Electro Mechanical Solutions, Inc. of Tampa, Florida and Berkeley Process Control, Inc. of Richmond, California announced today the successful Customer Shipment Acceptance of the Sidewinder One as a result of their partnership in wafer handling technology. The Sidewinder One is integrated on an advanced Inductively Coupled Plasma Etch system for installation at a leading U.S. MEMS facility.Sidewinder One represents the next generation of fully automated wafer handling through the enhanced performance of EMS' previously acquired product rights for the Model 4.5 Vacuum Robotic Arm and 48V Vacuum Elevator integrated with Berkeley Process Control's latest BXi controller technology.Shipment Acceptance and Marathon Handling Tests were jointly conducted by the "VLSI Top Ten" capital equipment manufacturer and the MEMS facility's engineering personnel."The Sidewinder One meets the needs of semiconductor OEMs to enhance wafer handling performance without long development cycles.
EMS' rapid...
EMS and Berkeley Achieve Customer Acceptance of First Shipment of Partnership
Vacuum > EMS and Berkeley Achieve Customer Acceptance of First Shipment of Partnership
Using Photographs and Graphics In Marketing Your Business
More and more businesses are seeing the benefit of
photography in marketing their business. html emails,
websites, business cards, banners. Scanners and
other digital equipment is HOT! What will you need to
know about the area of photography to take advantage
of photo marketing in your business?
Many memorable moments would be lost and long forgotten
without photography. The most important thing to
photography is light. The camera...
Vacuum > Using Photographs and Graphics In Marketing Your Business
Simpatico? Reopens its Web Store With a New Look and New Line of Tall Womens Apparel
Mt. Arlington, NJ August 26, 2004 -? Simpatico? began its journey three years ago, working its way through many obstacles, which is nothing new of the tall women's apparel market. With the assistance of Design Influence, a reputable design firm in New York City, and suggestions from customers and visitors to the site, Simpatico? has brought a fresh new look of apparel with versatility and feminine appeal. Simpatico? will not only offer its clothing to retail customers through its website,...
What on earth are Electron Microscopes? suits Vacuum Simpatico? Reopens its Web Store With a New Look and New Line of Tall Womens Apparel
Vacuum > Simpatico? Reopens its Web Store With a New Look and New Line of Tall Womens Apparel
Golf Sport Problem Solved With The Golf Belt Buckle All-in-One Combo
Englishtown, NJ (ContentDesk) February 11, 2006 -- A New innovative product made in USA by Baker Sales Co.,LLC, Announces a new product The Golf Buckle ALL-in-One Combo that incorporates a Golf Divot Repair Tool and a Magnetic Ball Marker housed in the buckle and easily accessible.The Golf Magnetic Ball Marker with the Golf Divot Repair Tool maybe slid in and out thru the top opening in the Golf Buckle ALL-in-ONE Combo unit. There has been a long standing problem in the golf sport. The problem...
What on earth are Electron Microscopes?
Vacuum > Golf Sport Problem Solved With The Golf Belt Buckle All-in-One Combo
UK Florists Breathe a Sigh of Relief
London, England (ContentDesk) February 18, 2006 -- With Valentine's Day now over, florists across England are breathing a huge sigh of relief.Business literally exploded for the thousands of florists listed on LeadingFloristsofEngland.com - England's largest network of local florists.LeadingFloristsofEngland.com is the ultimate guide to top local florists in England, and provides florists with an unrivalled opportunity of placing their business in front of thousands of targeted customers that...
What on earth are Electron Microscopes? Vacuum
Vacuum > UK Florists Breathe a Sigh of Relief
The Benefits of Using on Online Freight Load Board
For those of you involved in the freight industry who have not yet used or heard of an online freightloadboard yet, let me tell you that you are missing out on a an incredable industry efficiency tool. An online freight loadboard is just that... it's an online medium through which both carriers and shippers can access both freight and freight capacity from the comfort of their computers in order to maximise thier haulage/shipping efficiencies. Some are fee-based while others are free.
...
Vacuum > The Benefits of Using on Online Freight Load Board