Now showing items 22013-22032 of 64556

    • Hevelii selenographia, large moon with small moons 

      Hevelius, Johannes, 1611-1687 (1647)
      Selenographia contains detailed descriptions with illustrations of the surface of the moon. Hevelius included 40 engravings representing the Moon in different phases. The engraved frontispiece by Jeremias Falck depicts ...
    • Hevelii selenographia, man with telescope 

      Hevelius, Johannes, 1611-1687 (1647)
      Selenographia contains detailed descriptions with illustrations of the surface of the moon. Hevelius included 40 engravings representing the Moon in different phases. The engraved frontispiece by Jeremias Falck depicts ...
    • Hevelii selenographia, moon phases 

      Hevelius, Johannes, 1611-1687 (1647)
      Selenographia contains detailed descriptions with illustrations of the surface of the moon. Hevelius included 40 engravings representing the Moon in different phases. The engraved frontispiece by Jeremias Falck depicts ...
    • Hevelii selenographia, portrait 

      Hevelius, Johannes, 1611-1687 (1647)
      Selenographia contains detailed descriptions with illustrations of the surface of the moon. Hevelius included 40 engravings representing the Moon in different phases. The engraved frontispiece by Jeremias Falck depicts ...
    • Hevelii selenographia, sketch with title 

      Hevelius, Johannes, 1611-1687 (1647)
      Selenographia contains detailed descriptions with illustrations of the surface of the moon. Hevelius included 40 engravings representing the Moon in different phases. The engraved frontispiece by Jeremias Falck depicts ...
    • Hevelii selenographia, title page 

      Hevelius, Johannes, 1611-1687 (1647)
      Selenographia contains detailed descriptions with illustrations of the surface of the moon. Hevelius included 40 engravings representing the Moon in different phases. The engraved frontispiece by Jeremias Falck depicts ...
    • Hevelii selenographia, wooden contraption 

      Hevelius, Johannes, 1611-1687 (1647)
      Selenographia contains detailed descriptions with illustrations of the surface of the moon. Hevelius included 40 engravings representing the Moon in different phases. The engraved frontispiece by Jeremias Falck depicts ...
    • Hey Song Tea, 

      (2003)
    • Hezekiah's Pool 

      Whelpley, P.B. (1907)
      Black & white print of a pool surrounded by buildings. Line Drawing.
    • HF PRODUCED IONOSPHERIC ELECTRON DENSITY IRREGULARITIES DIAGNOSED BY UHF RADIO STAR SCINTILLATIONS 

      FREY, ALFRED (1982)
      HF-waves incident on an overdense (HF-frequency < penetration frequency) ionosphere are known to produce large scale electron density irregularities. It is predicted that similar irregularities are formed during underdense ...
    • HF SIDEBANDS IN THE IONOSPHERE 

      HUANG, ZHONG-HAO (1987)
      Sidebands on the high frequency (HF) waves received from two transmitted waves separated by small frequency intervals were first observed by Gordon and Ganguly in January, 1984 at Arecibo, Puerto Rico. Papadopoulos proposed ...
    • HF-INDUCED PLASMA WAVES IN IONOSPHERIC SPORADIC E 

      DJUTH, FRANK THOMAS (1979)
    • Hhega'bs--one fourth of the real size 

      Lane, E. W. (Edward William), 1801-1876 (1836)
      An amulet, a lady's or child's ornament. Engraving (prints).
    • Hhem'alees. 

      Lane, E. W. (Edward William), 1801-1876 (1836)
      A men pouring water to the cup on his right hand from a big vessel carried on his back. Another man carrying the same vessel with some flowers stuck in the mouth of vessel, and small water pot on his right hand. . Engraving ...
    • HI-YA, HI-YA, HI-YA! 

      (1960-09-30)
    • HICKSVILLE 

      (1965-11-04)
    • Hidden Markov Models for Wavelet-based Signal Processing 

      Crouse, Matthew; Baraniuk, Richard G.; Nowak, Robert David (1996-11-01)
      Current wavelet-based statistical signal and image processing techniques such as shrinkage and filtering treat the wavelet coefficients as though they were statistically independent. This assumption is unrealistic; considering ...
    • Hidden Markov Tree Modeling of Complex Wavelet Transforms 

      Choi, Hyeokho; Romberg, Justin; Baraniuk, Richard G.; Kingsbury, Nicholas G. (2000-06-01)
      Multiresolution signal and image models such as the hidden Markov tree aim to capture the statistical structure of smooth and singular (edgy) regions. Unfortunately, models based on the orthogonal wavelet transform suffer ...