New Year's Day, Spring Festival, one after another holiday to let the children happy to open flowers, but many parents are a bit guilty: when visiting relatives and friends, the child will inevitably contact a variety of candy sweets, how to make children eat less sweets? Eat sweets easy to form sweet Researchers have demonstrated through animal experiments that sugar can be addictive. Fan Zhihong, associate professor of nutrition and food safety at the Food College of China Agricultural University, also pointed out that people who eat sugar will love sugar more and more, especially children. If they live in an environment surrounded by sweet food from a young age, they will form a sweet-smelling constitution. About the harm of sugar, we all know that the most damage to the teeth. In all sugars, sucrose is also commonly known as white sugar, which is the most likely to cause dental caries, followed by glucose and lactose. In addition, the medical community also believes that high-sugar diet is a relevant risk factor for myopia. Numerous studies have also shown that when you eat sweets, your skin will be more oily, prone to acne, seborrheic dermatitis, and dandruff. Other studies have suggested that the combination of sugar and protein will be deposited under the skin to form a stain, making people look older. Fan Zhihong pointed out that research has revealed that refined sugar is more addictive than cocaine. She pointed out that once the sweet-sweet animals leave the sweets, a reaction similar to detoxification will occur. Moreover, sugar is an "empty calorie" food that contains high calories but lacks essential nutrients such as vitamins, minerals, and proteins. Cultivate natural taste from childhood Experts point out that if you want your child to eat less sweets, you should start to pay attention to nurture the child's natural taste when adding complementary foods. Fan Zhihong pointed out that when adding complementary foods, they should keep away from and dilute the sweetness, which is the best way to prevent children from becoming addicted to sweetness. If the child does not take the initiative to ask for sweet food, parents should not provide it. The source of children's sweets should only be taken from the most natural fruit or dried fruit. In addition, it is best not to eat other sweet foods. Zhang Silai, former director of Pediatrics Department of Chinese Traditional and Western Medicine Hospital, Beijing University of Chinese Medicine, told reporters that when she was raising her grandson, the snacks after 1 year old were formulas and fruits, like sugar, biscuits, puffed food, cakes, bread, and softness. The glutinous rice balls and cold drinks are not allowed to eat. "After age 3, only one piece of sugar is given each day, and it is a very small piece of hard candy. Occasionally one ice cream is eaten (after gargle). The high sugar content of these foods not only affects the dinner, but also has many food additives. Fatty acids are not good for health.â€
Everything You Need To Know About LED Lighting
2.LED stands for light-emitting diode.
A diode is an electrical device or component with two electrodes (an anode and a cathode) through which electricity flows - characteristically in only one direction (in through the anode and out through the cathode). Diodes are generally made from semi-conductive materials such as silicon or selenium - substances that conduct electricity in some circumstances and not in others (e.g. at certain voltages, current levels, or light intensities).
2.It`s really simple actually, and very cheap to produce, which is why there was so much excitement when LED lights were first invented!
When a light-emitting diode (LED) has a voltage source connected with the positive side on the anode and the negative side on the cathode, current will flow (and light will be emitted, a condition known as forward bias). If the positive and negative ends of the voltage source were inversely connected (positive to the cathode and negative to the anode), current would not flow (a condition known as reverse bias). Forward bias allows current to flow through the LED and in so doing, emits light. Reverse bias prevents current from flowing through the LED (at least up until a certain point where it is unable to keep the current at bay - known as the peak inverse voltage - a point that if reached, will irreversibly damage the device).
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LEDs are a simple invention with huge potential to change the lighting industry for the better. Don`t know much about them? Here are three big things you need to know to get your feet under you:
1.What Does LED Stand For?
2.A light-emitting diode is a semiconductor device that emits visible light when an electrical current passes through it. It is essentially the opposite of a photo-voltaic cell (a device that converts visible light into electrical current).
Did You Know? There is a similar device to an LED called an IRED (Infrared Emitting Diode). Instead of visible light, IRED devices emit IR energy when electrical current is run through them.
1.How Do LED Lights Work?
The p-type and n-type materials are created by introducing the original material to atoms of another element. These new atoms replace some of the previously existing atoms and in so doing, alter the physical and chemical structure. The p-type materials are created using elements (such as boron) that have less valence electrons than the intrinsic material (oftentimes silicon). The n-type materials are created using elements (such as phosphorus) that have more valence electrons that the intrinsic material (oftentimes silicon). The net effect is the creation of a p-n junction with interesting and useful properties for electronic applications. What those properties are exactly depends mostly on the external voltage applied to the circuit (if any) and the direction of current (i.e. which side, the p-type or the n-type, is connected to the positive terminal and which is connected to the negative terminal).
Application of the Technical Details to LED Lighting: