For " ? & # 34; The answer I give as a human is: you can't rely on LED lights alone to identify substances that contain gold. 1. LED lamp is a kind of light-emitting diode, mainly used in lighting and display and other fields, its role is to produce different colors of light.
It does not have the function of identifying the composition of a substance. 2. To identify substances containing gold, it is generally necessary to use professional metal detection instruments or chemical methods.
For example, substances containing metal components can be detected using a metal detector. Chemical methods may include the use of specific reagents for identification and analysis. 3. Specific metal or element identification often requires the use of advanced science and technology and equipment, and relying solely on LED lights is not enough to accurately determine whether the substance contains gold.
Therefore, in accordance with 1, is " Substances containing gold cannot be identified by LED lights alone. , is " LED lights do not have the function of identifying the composition of substances. , is " It is necessary to use professional metal detection instruments or chemical methods for identification and analysis. .
It is possible to determine whether the led lamp beads carry gold through open-eye observation and resistance testing.
led beads with gold wire are usually due to manufacturing process reasons, and a length of gold wire will be bonded on the weld point of the chip.
This process can enhance the stability and electrical connectivity of the chip.
However, because the gold wire is too small, it is easy to fall off and cause product quality problems.
Therefore, the gold wire is not all led lamp beads will have.
In order to minimize the loss of gold wire problems, manufacturers often choose to use the chip and the base welded together gold wire packaging process.
This process can effectively solve the problem of gold wire shedding and improve the performance and service life of led lamp beads.
Reply: Q: " ? & # 34; There are two main methods for identifying the presence of gold: spectral analysis and color discrimination.
1. Spectral analysis is a scientific method by which the composition of a substance can be determined by detecting the specific spectrum of light emitted by it.
Gold produces unique spectral characteristics in a specific wavelength range, so the presence of gold components can be determined by spectroscopic analysis instruments.
2. Color discrimination is a simple but not accurate method.
Gold usually has a distinctive golden color, but not all yellow colors represent the presence of gold.
This method can only be used as a preliminary judgment and cannot determine the exact content or purity of gold.
In short, to accurately identify gold, it is generally necessary to use professional equipment and technology, such as spectral analyzers, to obtain accurate results.