The most widely used energy-efficient lighting source is a fluorescent lamp. Its characteristics are high light efficiency, long life, and good light color. Divided into straight tube type, ring type, compact type, etc., then how to choose energy-saving light bulbs that save energy and worry, experts for us to interpret the eight energy-saving lamps need to pay attention to the issue. → Related Links: Lamps also have 3C certification consumers should pay attention to choose when buying
1, to buy energy-saving lamps to choose the preferred brand, to confirm the purchase of the product packaging integrity, complete logo.
2, pay attention to tungsten filament lamp power, most manufacturers will list the power of the product itself and the control of similar tungsten filament lamp power. For example, the sign “15w → 75w†generally indicates that the actual power of the lamp is 15w, which can emit a similar luminosity to a 75W tungsten bulb.
3, energy efficiency label. At present, the country has introduced energy efficiency standards for energy-saving lamps. Energy-efficiency labels are available to meet the standards. This is because energy-saving lamp products with an average life expectancy of more than 8,000 hours can be issued.
4. The warm light design and superb color technology of high-quality energy-saving lamps make the light colors pleasant and comfortable. The user can select the light color that matches the home design according to personal preference.
5, when purchasing energy-saving lamps, electronic ballasts to consider the technical parameters. Ballasts are the core components in lighting products. Energy efficiency national standards focus on the ballast energy efficiency limit value and energy conservation evaluation value.
6, the choice of appearance. There are many kinds of lamps and lanterns decoration. When choosing the whole lamp, pay attention to the plastic shell, it is better to be the heat-resistant flame-retardant plastic shell.
7. After choosing a satisfactory energy-saving lamp, do not rush to make a payment. The general store will provide a lamp holder to test the lamp for consumers. Try it before payment to ensure that the energy-saving lamp operates normally.
8, after the lamp is energized, it should also pay attention to whether the phosphor coating thickness is uniform, which will directly affect the normal lighting effects of the light.
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Optical Microscopy
In optical microscopy different filters are used to improve contrast and emphasize specific features based on material properties. This can be achieved with magnifications typically ranging from 2.5 times up to 1,000 times. In materialography, reflected light is the most commonly used type of light optical microscopy. Transmitted optical microscopy is also used, but mainly for mineralogy specimens.
Stereo Optical Microscopy
The stereo microscope is an optical microscope variant, designed for low magnification observation of a specimen, using the light reflected from the specimen surface.
Scanning Electron Microscopy
A scanning electron microscope (SEM) is a type of electron microscope that produces images of a specimen by scanning the specimen surface with a focused beam of electrons. The electrons interact with the atoms in the specimen, producing various signals that can be translated into information about the surface topography and the composition of the specimen.
Transmission Electron Microscopy
Transmission electron microscopy (TEM) uses a beam of electrons transmitted through an ultra-thin specimen and that interacts with the specimen as it passes through it. Generated signals can be translated into various types of information, including information on the type and orientation of individual crystals.
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