Category: LED Knowledge

The origin of vertical agriculture

It is estimated that by 2050, 80% of the world’s population will live in cities. The total population will increase to 9.2 billion, most of which are in developing countries. Many experts believe that if strict restrictions are not taken, mankind may face severe shortages of food and arable land, which will lead to many terrible consequences, such as famine and ecological disasters.… Read More

Brief Introduction of Vertical Agriculture

The concept of “vertical agriculture” was first proposed by Professor Dixon Despamir at Columbia University. Despamir hopes to produce the food people need in a well-lit building made of glass and steel. For example: feeding tilapia on the first floor, planting tomatoes on the 12th floor… In the building, all water is recycled; plants do not use compost; the generated methane and other gases are collected and turned into heat; livestock excrement becomes a source of energy, etc.… Read More

Solar cell

1 Definition and classification

Solar cells were first developed by the Bell Institute of the United States in 1953. In 1958, pioneer-1 satellite used solar cells as a power source for the satellite for the first time. Since the emergence of the energy crisis in the 1970s, the development of solar cells in the world has been booming. What is a solar cell?… Read More

Brief Introduction to Solar Energy

Solar energy usually refers to the radiant energy of sunlight. The nuclear reaction from “hydrogen” fusion to “helium” inside the sun continuously releases huge energy and continuously radiates energy into space. This energy is solar energy. The radiant power emitted by the sun into space is 3.8×10²⁶W. Only about one part of 2 billion of the energy is received by the earth, that is, 1.8×10¹⁷W.… Read More

Advantages and disadvantages of T8 LED tube

The T8 LED tube uses CREE ultra-bright LED white light as the light source, and the shell is acrylic/aluminum alloy (customer defined). The outer cover can be made of PC tube, with high temperature resistance up to 135 degrees.

advantage

First of all, T8LED fluorescent lamps do not use mercury and do not contain lead.… Read More

Illumination

The effects of light on plant growth and development are mainly manifested in three aspects: light intensity, light time (photoperiod) and light composition (light quality).

1. Light intensity

1). The influence of light intensity on plant growth and development 

★Insufficient light, weakening of photosynthesis, lengthening or chlorosis of plants, inhibiting the root system, 

★Plants are poorly exposed to light, flower bud formation and growth are poor, fruit development is blocked, resulting in flower and fruit drop,

★Excessive light, photoinhibition (light destruction), sunburn, 

The two-way regulation effect of light intensity on vegetable quality: strong light in fruits and

★vegetables, weak light in leafy vegetables; softening of light in cultivation.… Read More

The Development Status of the Global LED Industry

We usually call materials with poor or poor electrical and thermal conductivity, such as diamond, artificial crystals, amber, ceramics, etc., as insulators. And metals such as gold, silver, copper, iron, tin, aluminum, etc., which have good electrical and thermal conductivity are called conductors. You can simply call the material between the conductor and the insulator a semiconductor.… Read More