ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • American Institute of Physics (AIP)  (2)
Collection
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Noncontact monitoring of liquid surface levels with a precision of 10 micrometers: A simple ultrasound device (1991)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 62 (1991), S. 1640-1641 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A simple inexpensive device has been designed to measure the position of a flat surface to an accuracy of ±10 μm and has been applied to monitor water levels in studies of spread monolayers at the air-water interface. This instrument provides for determination of surface location in a range intermediate between those accessible by physical methods and those requiring the much more expensive and difficult techniques of interferometry. This technique utilizes a sound transmitter operating at 45 kHz and simple microphones coupled to phase-shift measurements via a phase-to-voltage converter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142445
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Dual beam spectrometer for optical studies of spread monolayers at the air-water interface (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 2781-2784 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An optical spectrometer for the study of low level optical absorption and reflection of spread monolayers at the air-water interface is described. This spectrometer is suitable for measurements at wavelengths from ∼350 to 800 nm and has a precision of ∼2×10−5 in terms of effective optical density. It employs a dual beam design utilizing fiber optic bundles to guide light and a multichannel photodiode array detection system. Instrumental control and data gathering are designed within Labwindows software. Representative spectral absorption data from chlorophyll a degradation kinetics are presented by way of illustration. Comparison of chlorophyll a reflection and absorption is also given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144616
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...