What Is a Squeeze Bulb?
Vacuum bulb: An incandescent light bulb whose light is lit in a vacuum glass bulb.
Vacuum bulb
- For more than 100 years, with the advent of electricity, scientists have never stopped studying light bulbs. Incandescent lamp is the earliest electric light source product, and its development has also gone through multiple stages. The original product has realized that the oxygen can cause the filament to heat up quickly after being energized and then burned out, thus inventing a vacuum light bulb.
- The first is that the degree of vacuum is limited and it cannot be as thin as the interior of the Madberg hemisphere. The second is that glass is a rigid substance and the air pressure is very strong. The third is the principle of an arch bridge because of the "arch" shape It is more resistant to pressure, such as the manufacture of bridges; the fourth is that when the light is on, the thin air inside expands due to heat, which will also partially offset the effect.
- Difference between inert gas bulbs and vacuum bulbs
- In the following decades, scientists discovered that encapsulating a single inert gas, such as krypton, neon, argon, xenon, etc. in a bulb, the lamp will be brighter and have a longer life than a vacuum bulb. some. In nature, radon is relatively easy to extract, so radon bulbs are cheaper.
- The impact of vacuum hygiene on bulb quality
- Most of the bulb products work under vacuum or inert gas. To ensure the normal operation of the product, a high vacuum or a pure working gas must be obtained. In the production process, if the vacuum hygiene is not good, dust, soot, grease, sweat stains, moisture and other impurity gases will enter the interior of the bulb to form pollution, which will have a serious impact on product quality.
- Let's first take a look at the Madberg Hemisphere experiment: close two hollow copper hemispheres with a diameter of more than thirty centimeters together, use an air extractor to extract the air in the ball, and then use two teams of horses in opposite directions. Pull the two hemispheres, "Even the 16 horses (struggling desperately) ca nt pull them apart, or they can only pull them apart with great effort, when the horses use all their power to pull the two hemispheres apart at the end , Also made a loud noise, like firing a gun. "How did the sound like firing a gun? This is because the interior of the two hemispheres is vacuum (or near vacuum), and the pressure of the gas inside the ball is very small, which is much lower than the atmospheric pressure outside the ball. When the ball is pulled apart, the air around the hemisphere will fill the space of the vacuum part. A collision made a loud noise.
- The same reason, when the vacuum bulb fell on the ground and broke, because the pressure of the gas inside the bulb is much smaller than the atmospheric pressure outside the bulb, the air around the bulb filled the vacuum and collided, making a loud noise.
- The bulb is vacuum, so the internal pressure should be much lower than the outside world ?! So the outside atmosphere squeezes the bulb, why isn't the bulb broken?
- The first is that the degree of vacuum is limited and it cannot be as thin as the interior of the Madberg hemisphere. The second is that glass is a rigid substance and the air pressure is very strong. The third is the principle of an arch bridge because of the "arch" shape. It is relatively pressure-resistant, such as the manufacture of bridges; the fourth is that when the amount of light is used, the thin air inside expands due to heat, which will also partially offset.
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