The “activity” of activated carbon here refers to its large surface area, strong adsorption capacity and easy adsorption of fine particles and molecules.
Rub the bow hair with rosin, and the powder will be left on the bow hair.
Different rosins produce different static friction, which affects the timbre of musical instruments.
The result of using smart seats is that the water dispenser can be continuously discharged, and when the pressure difference between the air pressure in the bucket and the atmospheric pressure reaches a certain value, an appropriate amount of air will be inhaled from the outside, that is, it will be released with a “grunt” sound.
Running should be one of the most popular sports.
For example, activated alumina is also loose and porous, with a large surface area.
Chemical activation to immerse carbonized materials in chemicals, such as acid, strong base, etc.
Take the water dispenser of Smart Seat as an example.
The rubber track in our school days left us a lot of youth.
So why do we call some substances “active”? Literally, “activity” refers to the nature of vitality, activity and easy reaction.
Although the number of times of releasing equal amount of water and absorbing air is more when the air volume is small than when the air volume is large, the difference between the two is not too large due to the influence of other complex factors.
During the production process, some other resins and materials will be added.
2007.12.19.byfreelanceQ.E.D.Q3 What is the difference between activated carbon and carbon? Why are some substances “active”? By anonymous A: Activated carbon is a kind of carbon widely used to filter pollutants in water and air, and its essence is also a kind of carbon.
When the bow pulls the string, because of the viscosity of rosin, the string moves towards the bow until the viscosity breaks, and the string will bounce back and vibrate.
Reference: Activatedcarbon ActivatedaluminabyYJYQ.E.D.Q4 Why does the running on the playground generally run counterclockwise, rather than clockwise? By anonymous answer: The question is very precise.
Rosin is a kind of solid resin obtained from pine trees and other plants, such as conifers.
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The structure diagram of Smart Seat [1] allows us to qualitatively look at the relationship between air pressure and volume through the ideal gas equation: when there is more water and less air in the bucket (that is, V is smaller), a slight drop in the water surface will lead to a sharp drop in the air pressure in the bucket, thus drawing in air for many times.
Acids or strong bases will react with impurities, thus corroding the carbonized materials and producing many pores.
It is not only a good catalyst and catalyst carrier, but also a strong water remover.
Physical activation: Put the carbonized raw materials into the high-temperature oxidation gas to generate pores through the reaction of the oxidation gas with carbon atoms and some impurity atoms.
Rosin produced by different companies has an exclusive secret formula.
Regardless of the bursting of bubbles in the rising process, a familiar “grunt” sound can be taken as a bubble in actual measurement.
On the contrary, when the bucket is almost empty, the air accounts for most of the volume (that is, V is relatively large), and the water surface needs to drop a lot to cause a significant reduction in the gas pressure in the bucket, so more water is needed to absorb a bubble.
Why do we often run counterclockwise instead of clockwise? Q1 Why is the violin timbre more plump after the violin strings are smeared with rosin? Byvanitas A: The influence of rosin on timbre should start from the static friction of rosin.
Photo source of activated carbon: Wiki activated carbon has many nanometer sized fine pores, and the surface area of one gram of activated carbon can even exceed 3000 square meters.
It is really “general” running counter clockwise rather than “all” running counter clockwise..
The larger the volume of remaining air, the less bubbles.
It is said that copper rosin creates a warm, velvety soft timbre, gold rosin produces a warm and clear timbre, silver rosin creates a concentrated and bright timbre, and lead silver rosin produces a fresh playing timbre (small changes in static friction will affect subtle changes in timbre, which may only be appreciated by real musicians or listeners 😓）。 Reference: How to Choose the RightRosinForYourStringedInstrumentRosinbyjitaQ.E.D.Q2 Why does the bucket on the water dispenser take a long time to generate more and smaller bubbles when it is full of water, and when the water in the bucket reaches the bottom, less and larger bubbles will emerge after it is filled with water? Is this related to the water pressure? By anonymous answer: This is mainly related to the volume of air in the bucket.
Touch the first mock examination with your hand, and you will feel the stickiness.
Photo source: Wiki is more flexible for common light, amber and dark rosin, which is suitable for use in cool and dry weather and cello; The light colored rosin is harder and denser, which is suitable for hot and humid weather, violin and viola.
Reference: [1] Watsons Enterprise Co., Ltd.
Some companies add precious metals, such as gold, silver, lead silver and copper, to their rosin formulations to change the static friction to produce different timbre quality.
The surface area of one gram of activated charcoal is only 2.0-5.0 square meters.
Therefore, we believe that materials like activated carbon that are easy to absorb energy or substances from the external environment are “active”.
As for the specific structure of Smart Seat, there is no more introduction.
Water dispenser: China, CN200710006311.9 [P].
Image source of activated carbon under electron microscope: wiki activated carbon can be produced in two ways.
However, the biggest difference between activated carbon and other ordinary carbon is that its surface area is larger, similar to the difference between popcorn and corn kernels.
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