Now that the heat has passed, we will gradually usher in the autumn season. Although the temperature during the day is still high, we can clearly feel the coolness of the silk in the morning and evening. In this season, the dryness is the most important feature, so people often There is dry mouth, dry cough without sputum, then we can alleviate this dryness by drinking porridge, spleen and stomach, lungs and fluid, nourishing yin and dryness, the following recommended three suitable for the autumn drink health porridge.
Sesame porridge. 50 grams of sesame, 100 grams of rice, first fry sesame, and research into go-between, until the rice is cooked, mix in sesame seeds with food. Suitable for constipation, cough, sputum, dizziness and dizziness.
Daisy porridge. Chrysanthemum 50 grams, 100 grams of rice, the first decoction of chrysanthemum, and then with the rice boiled porridge. Chrysanthemum has the effect of dispersing wind heat, clearing liver fire, eyesight, and so on. It has good therapeutic effect on autumn wind-heat type cold, dysphoria, etc. It also has good preventive and therapeutic effects on cardiovascular diseases.
Pear porridge. Two pears, washed and chopped with a belt core, increase the rice 100 grams, add water, porridge. Because pears have a good moistening effect, used for porridge, can be used as a health food for autumn.
Everything You Need To Know About LED Lighting
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.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.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?
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!
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:
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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