When the primary electron beam interacts with the sample, the electrons lose energy by repeated random scattering and absorption within a teardrop-shaped volume of the specimen known as the interaction volume, which extends from less than 100 nm to approximately 5 µm into the surface. The size of the interaction volume depends on the electron's landing energy, the atomic number of the specimen and the specimen's density. The energy exchange between the electron beam and the sample results in the reflection of high-energy electrons by elastic scattering, emission of secondary electrons by inelastic scattering and the emission of electromagnetic radiation, each of which can be detected by specialized detectors. The beam current absorbed by the specimen can also be detected and used to create images of the distribution of specimen current. Electronic amplifiers of various types are used to amplify the signals, which are displayed as variations in brightness on a computer monitor (or, for vintage models, on a cathode ray tube). Each pixel of computer video memory is synchronized with the position of the beam on the specimen in the microscope, and the resulting image is, therefore, a distribution map of the intensity of the signal being emitted from the scanned area of the specimen. Older microscopes captured images on film, but most modern instrument collect digital images.
Priit is the founder and CEO of DreamGrow Digital, an internet marketing and social media company. With his 20+ years internet marketing experience he is Helping companies to understand and use the digital marketing to reach their target audiences. He's also writing on a personal growth website Fixwillpower.com. He has spoken at hundreds of seminars and conferences on different aspects of internet marketing. Priit is also the organizer of Digital Elite Camp, a leading traffic and conversion event.
Off-page SEO builds a website’s reputation and authority by connecting it to other high-quality websites. Off-page SEO techniques include: link building (acquiring high-quality backlinks) from other websites and managing local listings and directory profiles. When many websites link to a brand’s website, it shows search engines that the brand’s website is trustworthy, reliable, and reputable, which increases its search rankings.
Around the world, 91 percent of consumers are likely to reward brands for authenticity and share the brand with friends and family, and 62 percent are likely to purchase from or show greater interest in purchasing from a brand that authentically expresses itself. Interestingly, U.S. consumers were less likely to build trust with new brands as compared to others globally, particularly the openness expressed by Asian consumers. For U.S.-based businesses marketing domestically, video content is the key to building trust.
View count: View count is the number of times your video has been viewed — also referred to as reach. This metric is great to track if your goal is to increase brand awareness and have your content seen by as many people as possible. However, it’s important to remember that every video hosting platform measures a view differently. For example, a view on YouTube is 30 seconds while a view on Facebook is only 3 seconds. Be sure to read the fine print before reporting on your video view count.
We still seem to have PageRank as an important ranking factor from Google, but have been told that Google is using a machine learning approach called RankBrain. The focus of this RankBrain approach is to help the search engine understand the meaning of queries better, and provide answers that (still) focus upon meeting the situational and informational needs of searchers.
7. Keyword research. Specific target keywords aren’t as important for SEO success as they used to be, now that Google search is fueled by semantic and contextual understanding, but you should still be able to identify both head keyword (short, high-volume keywords) and long-tail keyword (longer, conversational, low-volume keywords) targets to guide the direction of your campaign. http://m.youtu.be/7bNPg8UbhaE