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Negative Protons in Cosmic Radiations - Nature
Nature· 4 days ago11° 30, Rossi1 and Benedetti2 have counted the number of coincidences between two counters mounted with their axes parallel in such a way that the plane containing them could be rotated about ...
Barack and Michelle Obama endorse Kamala Harris for president
CNN.com· 4 days agoFormer President Barack Obama and former first lady Michelle Obama endorsed Vice President Kamala...
Liquid Crystals of Montmorillonite - Nature
Nature· 4 days agoIF a section of a dry sodium montmorillonite film is placed in a solution of sodium chloride it will swell parallel to the c-axis, the swelling increasing as the salt concentration ...
Evidence for α-Protein Structure in Polypeptides - Nature
Nature· 4 days agoThese diagrams show that both polymers have very similar structures. In A, the repeat along the fibre axis is 5·26 A., and it is possible that the intense equatorial reflexion ...
Transmission of High-power Laser Light through Tapered Dielectric Tubes and Rods - Nature
Nature· 4 days agoTHE transmission of high-power laser light was investigated for dielectric tubes and rods of a geometry schematically shown in Fig. 1. The measurements were performed with a Q-switched ruby ...
Ultramafic Rocks from the Mid-Atlantic Ridge - Nature
Nature· 4 days agoACCORDING to the ideas of Hess1 the backbone of active mid-oceanic ridges should consist of peridotites which originated in the Earth's mantle and were subsequently upthrusted into the crust ...
Multiple Geiger Counter Telescope Measurements of the Directions of Air Shower Particles - Nature
Nature· 4 days agoA MULTIPLE Geiger counter telescope was described recently by Shen and Singer1, for which it was claimed that it responded preferentially to air showers the axis of which ...
Satellites of Uranus - Nature
Nature· 4 days agoW. H. STEATENSONN has given the results of his och it is deduced that the old period should be decreased by 0·34 sec.—a small error consideringbservations of the four chief satellites of Uranus ...
Air-drag and the Equilibrium of Whirling Threads - Nature
Nature· 4 days agoIN the absence of all resistance to motion and assuming perfect flexibility, the differential equations of motion for a thread which carries a small spherical 'bob' and is whirled rapidly about ...
Effect of the Earth's Equatorial Bulge on the Life-time of Artificial Satellites and its use in...
Nature· 4 days agoPREVIOUS correspondents1–3 have discussed the derivation of a simple formula for the life-time T of an Earth satellite. The formula concerned is: where P is the period, dP/dt the rate of change ...
