DE510626C - Device for determining the contact angle of liquids by optical angle measurement - Google Patents

Device for determining the contact angle of liquids by optical angle measurement

Info

Publication number
DE510626C
DE510626C DEH122725D DEH0122725D DE510626C DE 510626 C DE510626 C DE 510626C DE H122725 D DEH122725 D DE H122725D DE H0122725 D DEH0122725 D DE H0122725D DE 510626 C DE510626 C DE 510626C
Authority
DE
Germany
Prior art keywords
angle
liquids
determining
contact angle
optical
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.)
Expired
Application number
DEH122725D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OSCAR HERSTAD DR ING
Original Assignee
OSCAR HERSTAD DR ING
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by OSCAR HERSTAD DR ING filed Critical OSCAR HERSTAD DR ING
Priority to DEH122725D priority Critical patent/DE510626C/en
Application granted granted Critical
Publication of DE510626C publication Critical patent/DE510626C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
    • G01N13/02—Investigating surface tension of liquids

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)
  • Length Measuring Devices By Optical Means (AREA)

Description

Gerät zur Bestimmung des Randwinkels von Flüssigkeiten durch optische Winkelmessung Bei dem Gerät zur Bestimmung des Randwinkels von Flüssigkeiten nach dem Patent 507 358 wird die auf einem schwenkbaren Arm montierte Lichtquelle um den doppelten Betrag des zu messenden Randwinkels gedreht, während die Visiereinrichtung feststeht. Unter Umständen kann es vorteilhaft sein, sowohl die Lichtquelle als auch die Visiereinrichtung auf je einem schwenkbaren Arm anzubringen. Dann läßt sich vor der eigentlichen Winkelmessung das Bild der Lichtquelle auf der spiegelnden Unterlage am Tropfenrand leichter einstellen. Bei der Messung des Randwinkels wird dann entweder der schwenkbare Arm mit der Lichtquelle um den doppelten Betrag des Randwinkels gedreht, während die Visiervorrichtung stehenbleibt, oder die Lichtquelle bleibt in Ruhe, und die Visiervorrichtung wird bewegt.Device for determining the contact angle of liquids by optical angle measurement In the device for determining the contact angle of liquids according to patent 507 358, the light source mounted on a pivotable arm is rotated by twice the amount of the contact angle to be measured, while the sighting device is stationary. Under certain circumstances, it can be advantageous to mount both the light source and the sighting device on a pivotable arm each. Then the image of the light source on the reflective surface at the edge of the drop can be adjusted more easily before the actual angle measurement. When measuring the edge angle, either the pivotable arm with the light source is rotated by twice the amount of the edge angle while the sighting device stops, or the light source remains at rest and the sighting device is moved.

Andererseits kann man aber auch ständig die Lichtquelle unverändert an dem dafür vorgesehenen Ort belassen und nur die Visiervorrichtung an einem schwenkbaren Arm befestigen, der bei der Messung des Randwinkels um dessen doppelten Betrag gedreht werden muß.On the other hand, you can also keep the light source unchanged Leave it in the intended place and only the sighting device on a pivotable one Fasten the arm that rotates twice as much when measuring the edge angle must become.

In allen Fällen kann also mit dem neuen Gerät der doppelte Betrag des zu messenden Randwinkels festgestellt werden, was bei kleinen Randwinkeln zur Erhöhung der Genauigkeit der Winkelmessung wichtig ist.In all cases, the new device can double the amount of the edge angle to be measured can be determined, which is the case with small edge angles for Increasing the accuracy of the angle measurement is important.

Claims (1)

PATENTANSPRÜCHE: t. Gerät zur Bestimmung des Randwinkels von Flüssigkeiten durch optische Winkelmessung nach dem Patent 507 358, dadurch gekennzeichnet, daß sowohl die Lichtquelle als auch die Visiervorrichtung auf schwenkbaren Armen um den doppelten Betrag des zu messenden Randwinkels gedreht werden können. z. Gerät nach Anspruch t, gekennzeichnet durch einen getrennt von einer feststehenden Lichtquelle schwenkbaren Arm mit Visiervorrichtung, dessen Winkeleinstellung an einer Gradeinteilung die Ablesung des doppelten Randwinkels gestattet.PATENT CLAIMS: t. Device for determining the contact angle of liquids by optical angle measurement according to patent 507 358, characterized in that both the light source and the sighting device can be rotated on pivotable arms by twice the amount of the contact angle to be measured. z. Apparatus according to Claim t, characterized by an arm with a sighting device which can be pivoted separately from a fixed light source and whose angle setting on a graduation allows the reading of the double edge angle.
DEH122725D 1927-01-16 1927-01-16 Device for determining the contact angle of liquids by optical angle measurement Expired DE510626C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH122725D DE510626C (en) 1927-01-16 1927-01-16 Device for determining the contact angle of liquids by optical angle measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH122725D DE510626C (en) 1927-01-16 1927-01-16 Device for determining the contact angle of liquids by optical angle measurement

Publications (1)

Publication Number Publication Date
DE510626C true DE510626C (en) 1930-10-20

Family

ID=7174173

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH122725D Expired DE510626C (en) 1927-01-16 1927-01-16 Device for determining the contact angle of liquids by optical angle measurement

Country Status (1)

Country Link
DE (1) DE510626C (en)

Similar Documents

Publication Publication Date Title
DE510626C (en) Device for determining the contact angle of liquids by optical angle measurement
US1456431A (en) Level and plumb
FR823695A (en) Electro-optical device for indicating or measuring turbidity or diffusion in liquids, in the atmosphere, etc.
GB535838A (en) Improvements in or relating to gauging or measuring devices
US2223428A (en) Navigation instrument
US1605979A (en) Ihstkumem jtob pbopobtiohal eraetiwg
DE930898C (en) Method and device for measuring the thickness of plastic, in particular liquid films (plastic layers)
US1076275A (en) Area-finder apparatus.
US1932103A (en) Direct-reading pitchometer
SU21461A1 (en) Mirror Dendrometer
US2387489A (en) Jolly balance
COREN OTARG
DE878728C (en) Gradient measuring scale
AT143004B (en) Device for measuring exposure times in photographic reproductions.
DE934436C (en) Method and device for producing equidistant, mutually variable strips
FR889069A (en) Lighting device for measuring or indicating instruments, with indexes and dial graduation appearing in light on a dark background
GB563219A (en) An instrument for gauging and recording the degree of accuracy or inaccuracy of a square or angular object
SU17743A1 (en) Gear Measuring Device
SU463038A1 (en) Hardness tester
DE812614C (en) Tester for determining the coefficient of friction
DE897164C (en) Optical plumb
DE1886777U (en) MECHANICAL CENTRAL DISTANCE KNIFE IN COMBINATION WITH CENTRAL CENTRAL DISTANCE KNIFE.
US1576437A (en) Gravity level
CH84930A (en) Device for planimetric measurements.
AT150404B (en) Photoelectric light meter for photographic and cinematographic recording apparatus.