I have described at some length the application of Positive Rays to chemical analysis; one of the main reasons for writing this book was the hope that it might induce others, and especially chemists, to try this method of analysis. I feel sure that there are many problems in chemistry, which could be solved with far greater ease by this than any other method. The method is surprisingly sensitive - more so than even that of spectrum analysis, requires an infinitesimal amount of material, and does not require this to be specially purified; the technique is not difficult if appliances for producing high vacua are available.
J. J. ThomsonRelated topics
book chemical chemistry ease far high hope infinitesimal length might sensitive spectrum sure technique try othersRelated quotes
Hence the ancient architects, following in the footsteps of nature, perfected the ascending rows of seats in theatres from their investigations of the ascending voice, and by means of the canonical theory of the mathematicians and that of the musicians, endeavoured to make every voice uttered on the stage come with greater clearness and sweetness to the ears of the audience. For just as musical instruments are brought to perfection of clearness in the sound of their strings by means of bronze plates or horn, so the ancients devised methods of increasing the power of the voice in theatres through the application of harmonics.
Vitruvius
It is worth remembering that every writer begins with a naively physical notion of what art is. A book for him or her is not an expression or a series of expressions, but literally a volume, a prism with six rectangular sides made of thin sheets of papers which should include a cover, an inside cover, an epigraph in italics, a preface, nine or ten parts with some verses at the beginning, a table of contents, an ex libris with an hourglass and a Latin phrase, a brief list of errata, some blank pages, a colophon and a publication notice: objects that are known to constitute the art of writing.
Jorge Luis Borges
It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value; a profound and important idea which appears so simple to us now that we ignore its true merit. But its very simplicity and the great ease which it has lent to computations put our arithmetic in the first rank of useful inventions; and we shall appreciate the grandeur of the achievement the more when we remember that it escaped the genius of Archimedes and Apollonius, two of the greatest men produced by antiquity.
Pierre-Simon Laplace
All of us want to be loved with unconditional, eternal love - a love that sees beyond beauty, intelligence, or any other superficial quality. We want to be loved simply because we are. At the same time, we all have a natural, innate tendency to share our love with others. This preoccupation with love arises because in reality we are eternal, loving beings whose souls are filled with knowledge and bliss. In this physical embodiment we are temporarily covered by material energy, but our nature is inherently divine, and we are always seeking the blissful love of the spiritual kingdom where our real fulfillment lies.
Bhakti Tirtha Swami
In its main features the Declaration of Independence is a great spiritual document. It is a declaration not of material but of spiritual conceptions. Equality, liberty, popular sovereignty, the rights of man - these are not elements which we can see and touch. They are ideals. They have their source and their roots in the religious convictions. They belong to the unseen world. Unless the faith of the American people in these religious convictions is to endure, the principles of our Declaration will perish. We can not continue to enjoy the result if we neglect and abandon the cause.
Calvin Coolidge