Similar words: bibliography, bibliographer, biographer, biography, radiograph, hagiography, cardiograph, idiographic. Meaning: ['hɪːlɪəʊgræf /-grɑːf] 
n. an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on. v. signal by means of a mirror and the using the sun's rays.
n. an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on. v. signal by means of a mirror and the using the sun's rays. 
Random good picture Not show
1 By using data of Nobeyama radio heliograph , we calculate value of magnetic field in lower corona in some active region from thermal bremsstrahlung, and preliminary result has been obtained.
2 The heliograph must thus be carefully aligned in the first instance.
3 According to the transmission requirement of solar radio heliograph, four transmitting schemes are compared and an analog optical fiber transmission system is chosen as the final mechanism.
4 Connected by telephone and heliograph to the heavy land batteries, it would hold even if the Japanese took the rest of the line.
5 The feature of optical fiber transmission system and its effect on the solar radio heliograph are analyzed in this article.
6 View from His Window at Le Gras, c. 1827. Heliograph. Gernsheim Collection.
More similar words: bibliography, bibliographer, biographer, biography, radiograph, hagiography, cardiograph, idiographic, angiography, biographical, biogeography, historiography, autobiography, echocardiography, autobiographical, electrocardiograph, magnetocardiography, aphelion, holograph, homograph, geographer, ideograph, monograph, geography, thermograph, autograph, typographer, phonograph, typography, mimeograph.