DE275906C - - Google Patents
Info
- Publication number
- DE275906C DE275906C DENDAT275906D DE275906DA DE275906C DE 275906 C DE275906 C DE 275906C DE NDAT275906 D DENDAT275906 D DE NDAT275906D DE 275906D A DE275906D A DE 275906DA DE 275906 C DE275906 C DE 275906C
- Authority
- DE
- Germany
- Prior art keywords
- pipes
- blowing
- pressure
- whistles
- overtone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 claims description 2
- 238000007664 blowing Methods 0.000 description 7
- 230000007812 deficiency Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/227—Details, e.g. general constructional or apparatus details related to high pressure, tension or stress conditions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE275906C true DE275906C (https=) |
Family
ID=532156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT275906D Active DE275906C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE275906C (https=) |
-
0
- DE DENDAT275906D patent/DE275906C/de active Active
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