Showing papers on "Tilt (optics) published in 1970"
TL;DR: In this article, the authors used conoscopic observation and circularly polarized light to estimate the C phase temperature dependent tilt angle of liquid crystal smectic C-particle tilt angle.
Abstract: Liquid crystal smectic C phase temperature dependent tilt angle, using conoscopic observation and circularly polarized light
134 citations
TL;DR: In this paper, liquid crystals biaxial smectic C phases tilt and optic axial angles determined from convergent light observations are determined from convergence-based light observations.
Abstract: Liquid crystals biaxial smectic C phases tilt and optic axial angles determined from convergent light observations
121 citations
TL;DR: In this article, the optimum tilt angle for stereo photographs as a function of foil thickness and magnification is given to give a good stereo impression in a stereoviewer in a stereo camera.
Abstract: Curves are given of the optimum tilt angle for stereo photographs as a function of foil thickness and magnification, to give a good stereo impression in a stereoviewer.
73 citations
TL;DR: The postural systems involved in the maintenance of constancy are considered to be those of the otolith, neck and trunk, and these systems investigated by obtaining visual verticality judgments immediately upon and several minutes after head, body, and trunk tilts.
Abstract: Visual orientation during lateral tilt is viewed in terms of orientation constancy. The postural systems involved in the maintenance of constancy are considered to be those of the otolith, neck and...
65 citations
50 citations
45 citations
Patent•
04 Dec 1970
TL;DR: In this paper, a rate gyroscope is used to travel in the hole or well, and to be rotated for azimuth determination, an accelerometer also being usable in conjunction with the gyrosensor for tilt determination.
Abstract: Bore hole and well mapping apparatus and method employs a rate gyroscope to travel in the hole or well, and to be rotated for azimuth determination, an accelerometer also being usable in conjunction with the gyroscope for tilt determination.
44 citations
40 citations
36 citations
TL;DR: In this paper, the authors showed that the defocusing effect is strongly dependent on the size of the Bragg diffraction angle θ, i.e., the tilt of the sample to the sample surface and the normal to the diffracting plane.
Abstract: During measurement of preferred crystallographic orientation with the Schulz x‐ray diffraction technique, several factors can cause defocusing. Earlier investigations showed that tilt of the specimen in Φ, the angle between the normal to the sample surface and the normal to the diffracting plane, is the most severe limitation for the Schulz reflection technique. The present study shows that this defocusing effect is strongly dependent on the size of the Bragg diffraction angle θ: The greater the Bragg angle, the smaller the decrease in intensity for a given tilt angle of Φ. On the other hand, the absorption coefficient μ of the sample has no influence on the decrease in intensity with increasing tilt in Φ, and its effect is negligibly small for most metals. Correction factors for the loss of intensity can be derived and have a general analytic form, but different coefficients are required for each goniometer setting.
35 citations
Patent•
05 Oct 1970TL;DR: In this article, a variable resistor is used to indicate the angle of tilt of a boat's stern drive, which can then be transferred to an indicator gauge to estimate the trim angle.
Abstract: A system for indicating to the boat driver the trim angle at which his stern drive is set. The system incorporates a variable resistor which is enclosed in waterproof housing. The housing is mounted on the gimbal ring or yoke at the end of the shaft which is the horizontal tilt axis. The movable portion of the variable resistor is attached to the shaft which forms the horizontal tilt axis of a stern drive. In this manner, a signal proportional to the angle of tilt of the stern drive is created and can then be transferred to an indicator gauge. A trim limit switch having interchangeable parts with the variable resistor can also be mounted on the other end of the horizontal tilt axis and connected to the power trim system to limit the angular trim position of the stern drive.
Patent•
31 Mar 1970
TL;DR: In an axial piston hydraulic device, the cylinders in the rotor communicate with the high and low pressure ports of the device by way of passages which are positioned between the axes of the cylinders and the rotational axis of the rotor to reduce resistances to fluid flow resulting from rotor rotation when the cylinders are on their low pressure stroke as mentioned in this paper.
Abstract: In an axial piston hydraulic device, having an angularly tiltable tilt plate for controlling the stroke of the pistons, the cylinders in the rotor communicate with the high and low pressure ports of the device by way of passages which are positioned between the axes of the cylinders and the rotational axis of the rotor to reduce resistances to fluid flow resulting from rotor rotation when the cylinders are on their low pressure stroke. Additional passages are provided which communicate the high pressure port with the rotor and/or the bearing of the tilt plate to exert counterbalancing forces on these components during operation of the device. On- and off-stroke control pistons may also be positioned on the side of the tilt plate opposite the pistons to exert counterbalancing forces on the tilt plate.
TL;DR: In this article, the equilibrium angle between two high angle boundaries and a small angle tilt boundary was measured as a function of the boundary inclination, and it was shown that the fit of the atoms in the boundary (boundary coincidence) is crucial for the energy of a high angle grain boundary.
TL;DR: The effect of structure and angle of tilt on the magnitude of the tilted-room illusion and its relationship to the illusion produced by a tilted-line field were examined in two experiments.
Abstract: The effect of structure and angle of tilt on the magnitude of the tilted-room illusion and its relationship to the illusion produced by a tilted-line field were examined in two experiments. In Experiment L, nine groups of 13 Ss were tested under three conditions of room tilt in the frontal plane (22.5, 45, and 67.5 deg) and under three conditions of structure (empty room, room with a back wall of stripes, and room with furniture). The results indicate that, while magnitude and direction of the illusion vary with degree of room tilt, structure increases the magnitude of the illusion only at a 45-deg room tilt. In Experiment 2, a field of lines was presented through a circular reduction tube to three groups of 13 Ss under three conditions of line tilt (22.5, 45, and 67.5 deg). An illusion occurred that was much smaller in magnitude and functionally different for the three tilt conditions when compared with the tilted-room illusion.
Patent•
19 Oct 1970
TL;DR: In this paper, a transverse cut between the tail and the anus of a bird was made by using a cutting disk and a support which can tilt the device about a first horizontal axis and about a second axis, above and parallel to the first axis.
Abstract: A device for making a transverse cut between the tail and the anus of the body of a bird which is suspended by its legs from a conveyor track. The device has a cutting disk and a support which can tilt the device about a first horizontal axis and about a second axis, above and parallel to the first axis. Two guide members are connected to the support. The first guide member is in the proximity of the cutting disk and at a short distance above the lower edge of the disk and the second guide member being spaced downwardly from the first guide.
Patent•
06 Jul 1970TL;DR: In this article, a variable displacement pump or motor unit having a power shaft drivingly connected to a rotor rotatably mounted in the stationary housing is described, where spherical pistons in an annular series are mounted on the rotor and each cooperates with a cylinder cup which has a sliding slipper base portion slidingably engaging the stationary tilt plate.
Abstract: A variable displacement pump or motor unit having a power shaft drivingly connected to a rotor rotatably mounted in the stationary housing. Spherical pistons in an annular series are mounted on the rotor and each cooperates with a cylinder cup which has a sliding slipper base portion slidably engaging the stationary tilt plate. The tilt plate is pivotally mounted on the frame and the angle of the tilt plate with respect to the axis of the unit is adjusted for variable displacement.
Patent•
23 Nov 1970TL;DR: In this paper, a traction drive transmission comprising input and output shafts, an input race secured to the input shaft for rotation therewith, an output race rotatably mounted on the output shaft; a plurality of tiltable rollers mounted in frictional contact at the edges thereof with the input race; a planetary unit including ring, sun, planet pinion and carrier members, the direction of rotation of the carrier member being determined by roller tilt position and relative sun and ring member speeds; and hydraulic control means for tilting the rollers in response to signals indicative of predetermined
Abstract: A traction drive transmission comprising input and output shafts; an input race secured to the input shaft for rotation therewith; an output race rotatably mounted on the input shaft; a plurality of tiltable rollers mounted in frictional contact at the edges thereof with the input and output races; a planetary unit including ring, sun, planet pinion and carrier members, the direction of rotation of the carrier member being determined by roller tilt position and relative sun and ring member speeds; clutch means for at times operatively connecting the carrier member to the output shaft; and hydraulic control means for tilting the rollers in response to signals indicative of predetermined engine parameters and for engaging the clutch means to rotate the output shaft in one direction in response to a first signal indicative of a first predetermined tilt angle portion of the total tilt angle range of the rollers and for rotating the output shaft in the opposite direction in response to a second signal indicative of a second predetermined tilt angle portion of the total tilt angle range of the rollers, and for disengaging the clutch means in response to a third signal indicative of the remaining portion of the total tilt angle range of the rollers, there being a predetermined, infinite torque, tilt angle position in the latter tilt angle portion at which the speeds of the ring and sun are substantially equal and the planet pinions are stationary.
17 Aug 1970
Patent•
09 Sep 1970
TL;DR: A tiltable headboard for beds is a headboard pivotally mounted on supporting means in cooperation with a bed frame and having a pivally mounted tilt support movable into locking position to maintain the head board in a tilted position as mentioned in this paper.
Abstract: A tiltable headboard for beds being a headboard pivotally mounted on supporting means in cooperation with a bed frame and having a pivotally mounted tilt support movable into locking position to maintain the head board in a tilted position, said tilt support means for releasing same from tilt support position, and having means for adjusting the angle of tilt.
Patent•
26 Mar 1970
TL;DR: In this article, a new type of gravity interferometer using an equilibrium fluid medium for its characteristic optical flatness is described, which consists of using the fluid surface to act as the sensing element for monitoring the direction of force gradients, since a sufficiently static and isolated fluid element does not exhibit any shear.
Abstract: A new type of gravity interferometer using an equilibrium fluid medium for its characteristic optical flatness is described. The technique consists of using the fluid surface to act as the sensing element for monitoring the direction of force gradients, since a sufficiently static and isolated fluid element does not exhibit any shear. One common example of this is the flat surface which a basin like container or fluid assumes when it is placed upon the earth. Such a surface is perpendicular to the vertical, that is, at right angles to the gradient of the earth''s gravitational potential field. The new system includes a modification of the well known Michelson Interferometer. When complete and in operation the instrument indicates, over time, the very minute tilt angles of the earth''s land mass in terms of a visible and measurable fringe pattern shift. These small land mass tilt angles, in turn, substantiate the predication of the tidal effects on the earth''s land mass that are caused, primarily, by both solar and lunar gravitational attraction. The new instrument possesses a high degree of resolution. Matters related to mechanical and thermal considerations are discussed. Also, information is presented for an optional method of electronically monitoring and recording the instruments data, as signal output. Local noise is well dampened by the use of the fluid medium. The geophysical theory involved is developed and summarized. The latter agrees with the empirical, or with the results obtained from continuous operation of the new gravity interferometer system.
01 Feb 1970
TL;DR: Lateral-directional dynamic stability derivatives, characteristics, and handling qualities of tilt-wing V/STOL configuration are studied.
Abstract: Lateral-directional dynamic stability derivatives, characteristics, and handling qualities of tilt-wing V/STOL configuration
TL;DR: In this article, an expalanation of the interaction between tilt and orientation on the Poggendorff illusion is given in terms of three facts: (1) the illusion decreases with a decrease in distance between the parallel lines, (2) the effect of the angle of the oblique decreases, and (3) the retinal image changes systematically as the target is tilted backwards.
Abstract: An expalanation of the interaction between the effect of tilt and orientation on the Poggendorff illusion is given in terms of three facts: (1) that the illusion decreases with a decrease in distance between the parallel lines, (2) that the illusion increases as the angle of the oblique decreases, and (3) that the retinal image changes systematically as the target is tilted backwards.
TL;DR: In this paper, the visual vertical with 30 degrees right head tilt was determined by three psychophysical procedures: the methods of adjustment with and without bracketing and a modified up-and-down (staircase) method.
Abstract: The visual vertical with 30 deg right head tilt was determined by three psychophysical procedures: the methods of adjustment with and without bracketing and a modified up-and-down (staircase) method. The visual vertical was on the opposite side of the gravitational vertical to tilt (E-effect) under all conditions. However, the E-effect measured by the up-and-down method was significantly larger than the combined average of the two methods of adjustment. The methods of adjustment with and without bracketing yielded approximately the same means for the visual vertical when averaged over starting positions, but differed significantly in the linear trends taken over starting positions. A greater error of anticipation resulted when bracketing was not allowed.
Patent•
14 Jan 1970
TL;DR: In this paper, the air velocity acting thereagainst to minimize the frictional engagement of the traveler with ring and to reduce the angle of tilt of the traveller during operation so that the upper part of the traveling body does not come into contact with the top of the ring.
Abstract: Travelers for use on a vertical or horizontal type spinning or twisting ring having integral rearward extensions that utilize the air velocity acting thereagainst to minimize the frictional engagement of the traveler with ring and to reduce the angle of tilt of the traveler during operation so that the upper part of the traveler does not come into contact with the top of the ring.
01 Aug 1970
TL;DR: Instruments for platforms stability determination, considering azimuth, tilt rotation and translational motion, are presented in this paper, where the authors propose an algorithm for platform stability determination.
Abstract: Instruments for platforms stability determination, considering azimuth, tilt rotation and translational motion
Patent•
02 Feb 1970
TL;DR: An improved tilt switch has a plurality of mercury switches disposed about a housing and mounted at an angle with respect to the level or horizontal, and having a resilient adjusting means for coupling the housing to a member whose tilt is to be measured.
Abstract: An improved tilt switch having a plurality of mercury switches disposed about a housing and mounted at an angle with respect to the level or horizontal, and having a resilient adjusting means for coupling the housing to a member whose tilt is to be measured.
TL;DR: In this paper, a procedure for measuring the specimen and the beam tilt in the Bond method of latticeparameter measurement is given, based on measuring the position of the diffracted X-ray beam in the direction perpendicular to the measuring circle.
Abstract: A procedure for measuring the specimen and the beam tilt in the Bond method of lattice-parameter measurement is given. The procedure is based on measuring the position of the diffracted X-ray beam in the direction perpendicular to the measuring circle. The previously unknown error due to the combined effect of specimen and beam tilt can be evaluated or eliminated.