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Page "Chisel" ¶ 36
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If and angle
If it is assumed that the formula given by Lodge of cosec Af applies, the pressure difference along the major axes can be calculated from the angle of inclination of the major axis, and from this the interfacial tension can be calculated.
If a wedge-shaped coating of increasing thickness is removed from a substrate by an instrument like the Hesiometer with a knife of constant rake angle, a number of removal mechanisms are often observed which depend upon the thickness of the coating.
If the rake angle **yc of the knife is high enough and the friction angle **yt between the front of the knife and the back of the chip is low enough to give a positive value for Af, the resultant vector R will lie above the plane of the substrate.
If the polarity is correct, the platform will turn until the heading error angle is zero.
If there is refraction at a collective spherical surface, or through a thin positive lens, O ' 2 will lie in front of O ' 1 so long as the angle u2 is greater than u1 ( under correction ); and conversely with a dispersive surface or lenses ( over correction ).
If the angle u1 is very small, O ' 1 is the Gaussian image ; and O ' 1 O ' 2 is termed the longitudinal aberration, and O ' 1R the lateral aberration of the pencils with aperture u2.
If the pencil with the angle u2 is that of the maximum aberration of all the pencils transmitted, then in a plane perpendicular to the axis at O ' 1 there is a circular disk of confusion of radius O ' 1R, and in a parallel plane at O ' 2 another one of radius O ' 2R2 ; between these two is situated the disk of least confusion.
If the index finger of the right hand is pointed forward, the middle finger bent inward at a right angle to it, and the thumb placed at a right angle to both, the three fingers indicate the relative directions of the x -, y -, and z-axes in a right-handed system.
If extension is executed properly the discus will be at the right angle to ride on the air current and thus be taken a farther distance.
Formulae connecting a tangential angle, the angle anchored at the ellipse's center ( called also the polar angle from the ellipse center ), and the parametric angle t < ref > If the ellipse is illustrated as a meridional one for the earth, the tangential angle is equal to geodetic latitude, the angle is the geocentric latitude, and parametric angle t is a parametric ( or reduced ) latitude of auxiliary circle </ ref > are:
If the angle between the plane and the axis is less than the angle between the line on the cone and the axis, or if the plane is parallel to the axis, then the conic is a hyperbola.
If, the angle 2θ between the asymptotes equals 90 ° and the hyperbola is said to be rectangular or equilateral.
If the Earth were perfectly spherical and homogeneous, then longitude at a point would just be the angle between a vertical north-south plane through that point and the plane of the Greenwich meridian.
If the position angle of the body's Prime Meridian increases with time, the body has a direct ( or prograde ) rotation ; otherwise the rotation is said to be retrograde.
If, however, the cylinders are at some angle to one another, then there is a large volume surrounding the cylinder which the approaching cylinder's center-of-mass cannot enter ( due to the hard-rod repulsion between the two idealized objects ).
If the lift coefficient for a wing at a specified angle of attack is known ( or estimated using a method such as thin airfoil theory ), then the lift produced for specific flow conditions can be determined using the following equation:

If and plane
If A is the major axis of an ellipsoid and B and C are the other two axes, the radius of curvature in the ab plane at the end of the axis Af, and the difference in pressure along the A and B axes is Af.
If the above errors be eliminated, the two astigmatic surfaces united, and a sharp image obtained with a wide aperture — there remains the necessity to correct the curvature of the image surface, especially when the image is to be received upon a plane surface, e. g. in photography.
If, in an unsharp image, a patch of light corresponds to an object point, the center of gravity of the patch may be regarded as the image point, this being the point where the plane receiving the image, e. g., a focusing screen, intersects the ray passing through the middle of the stop.
If is any unit vector, the projection of the curl of F onto is defined to be the limiting value of a closed line integral in a plane orthogonal to as the path used in the integral becomes infinitesimally close to the point, divided by the area enclosed.
If is an outward pointing in-plane normal, whereas is the unit vector perpendicular to the plane ( see caption at right ), then the orientation of C is chosen so that a tangent vector to C is positively oriented if and only if forms a positively oriented basis for R < sup > 3 </ sup > ( right-hand rule ).
If a simply stable system response neither decays nor grows over time, and has no oscillations, it is marginally stable: in this case the system transfer function has non-repeated poles at complex plane origin ( i. e. their real and complex component is zero in the continuous time case ).
If these three ligands and the metal ion are in one plane, the isomer is said to be meridional, or mer.
If the axes are named x, y, and z, then the x coordinate is the distance from the plane defined by the y and z axes.
If these conditions do not hold, the formula describes a more general affine transformation of the plane provided that the determinant of A is not zero.
Many results about plane figures are proved, e. g., If a triangle has two equal angles, then the sides subtended by the angles are equal.
If any part of the ball reaches any part of the imaginary vertical plane transected by this line while in-bounds and in possession of a player whose team is striving toward that end of the field, this is considered a touchdown and scores six points for the team whose player has advanced the ball to, or recovered the ball in, this position.
If friction arises from a weight being drawn up the inclined plane of successive asperities, why isn't it balanced then through descending the opposite slope?
# If two straight lines in a plane are crossed by another straight line ( called the transversal ), and the interior angles between the two lines and the transversal lying on one side of the transversal add up to less than two right angles, then on that side of the transversal, the two lines extended will intersect ( also called the parallel postulate ).
If the pump beams E < sub > 1 </ sub > and E < sub > 2 </ sub > are plane ( counterpropagating ) waves, then:
If the areas of the two parallel faces are A < sub > 1 </ sub > and A < sub > 3 </ sub >, the cross-sectional area of the intersection of the prismatoid with a plane midway between the two parallel faces is A < sub > 2 </ sub >, and the height ( the distance between the two parallel faces ) is h, then the volume of the prismatoid is given by ( This formula follows immediately by integrating the area parallel to the two planes of vertices by Simpson's rule, since that rule is exact for integration of polynomials of degree up to 3, and in this case the area is at most a quadratic in the height.
If any part of either wrestler is in contact with the ropes or has otherwise broken the plane of ropes all grappling contact between the wrestlers must be broken within a five count or else the attacking wrestler may be subject to disqualification.
If a fault has lineations formed by movement on the plane, e. g. ; slickensides, this is recorded as a lineation, with a rake, and annotated as to the indication of throw on the fault.
If the tip is moved across the sample in the x-y plane, the changes in surface height and density of states cause changes in current.

If and blade
If the rotor disk is to be tilted forward ( to gain forward velocity ), its rotation requires that the downward net force on the blade be applied roughly 90 degrees ( depending on blade configuration ) before, or when the blade is to one side of the pilot and rotating forward.
If the center of the blade is too soft, this bending may likely be permanent.
If paddlers are not synchronised to the two lead strokes, for example if a pair of paddlers takes their cue from the pair of paddlers sitting immediately in front of them, then each successive pair of blades hits the water a fraction of a second behind the blade just in front of them.
If the blade is opened, a spark may keep the connection between blade and spring conducting.
If this is not the case the blade will either be unable to cut ( as it absorbs all the energy and is damaged ) or will wear away very quickly ( if it is hard enough to transfer enough of the energy to damage the material ).
If it is not parallel, the workpiece can often become pinched between the blade and the fence, inducing violent kickback and causing injury.
If the blade is parallel with the fence you will notice the marks made by the back of the blade on the wood.
If you need to make a series of equal length crosscuts, use a stop block in front of the blade so the workpiece is not in contact with the rip fence during the cut.
If sawdust is prone to build up under the cutting blade, through friction the spinning blade will quickly ignite the accumulated dust, and the smoke can be mistaken for an overheated blade.
If the saw detects a change in this current ( as would occur if a hand or other body part came into contact with the blade ) an automatic braking system is activated, forcing an aluminum brake block into the blade.
If you use a radial arm saw to rip you need a blade with a negative hook angle for the teeth to keep the saw from lifting the board off the saw and kicking back.
If a potato is grasped in the left hand and the peeler in the right, the thumb of the right hand is used to push the potato backwards against the blade.
If a frond is pinnate, the segments of the blade are called pinnae ( singular: pinna ) and the stalks bearing the pinnae are called petiolules ( The main vein or mid-rib of a pinna is sometimes called a costa ( pl., costae ).
If treatment is required, it is usually a valgus osteotomy of the femur fixed by an angled blade plate device or even a dynamic hip screw.
If the saw climbs with this blade the yoke roller bearings need to be adjusted and tightened.
If it is required to measure the angles of cutting edges, it is achieved by using a blade edge protractor ( or goniometer ) see CATRA Hobbigoni
If a sabre grind blade has the same edge angle as a chisel grind, it still has two edges and thus has twice the included angle.

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