- #1
ddddd28
- 73
- 4
Which materials have high capillary length, and can be found easily? (above 1cm)
High Capillary Length Materials: 1cm+ Easily Found
Click For Summary
Discussion Overview
The discussion revolves around identifying materials with high capillary lengths, specifically those exceeding 1 cm, and exploring the factors that influence capillary length. Participants inquire about available resources and seek clarification on the relevant formulas and conditions affecting capillary action.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- Some participants inquire about specific materials that exhibit high capillary lengths and express a desire for easily accessible examples.
- There is a request for information on what factors affect capillary length, including surface tension and density.
- One participant mentions familiarity with the formula for calculating capillary length but expresses reluctance to verify each material's properties individually.
- Another participant suggests starting with a Google Images search for tables of capillary lengths as a potential resource.
- Participants discuss the need to specify multiple materials and conditions, such as the type of tube and the atmosphere, when considering capillary action.
- There is a claim that capillary lengths typically do not exceed 3 mm for most liquids, including mercury, but that this length can increase significantly when the atmosphere is another liquid.
Areas of Agreement / Disagreement
Participants generally agree on the need for specific examples and conditions affecting capillary length, but there is no consensus on which materials to consider or the exact values for surface tension in the formula.
Contextual Notes
Limitations include the lack of specific material examples and the dependence on various conditions such as the type of atmosphere and the properties of the liquids involved.
- #2
berkeman
Admin
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What reading have you been doing so far on this? What affects the capillary length of a material?ddddd28 said:
- #3
ddddd28
- 73
- 4
The formula is known to me. I just don't want to check each material.(surface tension, and density)
Do you know where can I find a table of capillary length?
Do you know where can I find a table of capillary length?
- #4
berkeman
Admin
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Start with a Google Images search on Table of Capillary Lengthsddddd28 said:
- #5
rbelli1
Gold Member
- 1,092
- 446
You need to specify two or more materials. The tube, the target material, and depending on the atmosphere the atmosphere.
BoB
BoB
- #6
ddddd28
- 73
- 4
ok, but what value should I put instead of the surface tension γ in the formula? water- atmosphere, water- solid? √(γ/gρ)rbelli1 said:
I read somewhere that the capillary lengh doesn't exceed even 3mm for most of the liquids, even mercury. However, if the atmosphere is another liquid, the capillary lengh increases significantly, which makes it easier for my purposes.
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