Showing posts with the label science

6 Simple Ways to Save Money at Home

  With the economy being what it is, people are more conscious about their expenses. The last thing you want to be doing is spending money on things that are not essential. There are simple ways to save money at home, which can cut down your bills significantly. Use energy-efficient appliances If possible, buy energy-efficient appliances such as washing machines and dryers that have lower water and energy consumption levels. These will help save energy and thus money over time because they consume less electricity than their non-efficient counterparts do. Consider replacing your old refrigerator with an energy-efficient refrigerator. You may not be aware of the fact that your fridge is one of the biggest consumers of power in your home. An inefficient refrigerator can use up to 300 kWh per year, which is more than 10% of the total household energy bill. So, it is important to get an efficient one that uses less electricity and saves you money on your electricity bill. Use en

Advantages of Electron Microscopy over Optical Microscopy

In scanning electron microscopy (SEM), a beam of electrons scans the surface of a specimen, providing detailed, magnified images. This is different to optical microscopy , which involves viewing objects through a magnified lens using visible light. Electron microscopy has certain advantages over optical microscopy. How Do Electron Microscopes Work? Using electron beams, an electron microscope can give a very high quality of imaging, as an advanced means of sample analysis. In SEM, an electron gun fires an electron beam which is focussed through a series of lenses and apertures on the microscope. When these beams hit the sample, they interact with atoms on its surface, emitting secondary electrons, backscattered electrons, and x-rays. The microscope has built-in detectors that pick up these signals, using them to create high-resolution images and provide information on the composition of the specimen. The SEM operates under vacuum conditions, which prevents atoms or mo