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    <!-- Technical Diagrams Portal -->
    <url>
        <loc>https://gemsmakers.com/diagrams.php</loc>
        <lastmod>2026-11-03</lastmod>
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        <priority>0.9</priority>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=1</image:loc>
            <image:title>Swiss Lever Escapement Geometry &amp; Impulse Dynamics</image:title>
            <image:caption>Detailed mechanical layout showing escape wheel impulse tooth, entry/exit pallet rubies, and roller jewel engagement.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=2</image:loc>
            <image:title>Balance Wheel Harmonic Oscillation &amp; Hairspring Torque</image:title>
            <image:caption>Phase-space trajectory and restoring torque curves of the Glucydur balance wheel and Nivarox Breguet hairspring.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=3</image:loc>
            <image:title>Daniels Co-Axial Escapement Architecture</image:title>
            <image:caption>George Daniels co-axial escapement with twin escape wheels, radial impulse transmission, and zero sliding friction.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=4</image:loc>
            <image:title>Tourbillon 1-Minute Revolving Carriage Mechanics</image:title>
            <image:caption>One-minute revolving cage mechanism canceling positional gravity errors across vertical positions (Crown Up/Down/Left/Right).</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=5</image:loc>
            <image:title>Mainspring Barrel Torque Curve &amp; Isochronism Plateau</image:title>
            <image:caption>Power reserve discharge curve showing Hooke's elastic plateau, high-torque winding zone, and terminal amplitude decay.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=6</image:loc>
            <image:title>Hydrostatic Archimedes Immersion Balance</image:title>
            <image:caption>Dual-weighing hydrostatic immersion setup for non-destructive density calculation and gold coin karat verification.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=7</image:loc>
            <image:title>Gold Karat Metallurgical Purity Spectrum</image:title>
            <image:caption>Standard sovereign assay purity bands from 9 Karat (37.5%) up to 24 Karat 999.9 Fine Kilobars with specific gravities.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=8</image:loc>
            <image:title>Au-Ag-Cu Ternary Metallurgical Phase Diagram</image:title>
            <image:caption>Gibbs isothermal ternary phase composition triangle showing yellow, rose, red, green, and white gold alloy regions.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=9</image:loc>
            <image:title>Sovereign Assay Hallmark Identification Anatomy</image:title>
            <image:caption>Deconstruction of official assay punch marks: Sponsor's mark, standard purity mark, assay office town mark, and date letter.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=10</image:loc>
            <image:title>Cupellation Fire Assay Thermal Separation Process</image:title>
            <image:caption>Thermal gravimetric fire assay workflow isolating pure gold/silver doré bead from base metal oxides in a bone-ash cupel.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=11</image:loc>
            <image:title>AISC Simply Supported W-Beam Center Point Deflection</image:title>
            <image:caption>Elastic deflection curve and bending moment diagram for wide-flange structural steel beams under concentrated center loads.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=12</image:loc>
            <image:title>Cantilever Beam Under Uniformly Distributed Load (UDL)</image:title>
            <image:caption>Shear force diagram (SFD) and bending moment diagram (BMD) for cantilevered steel beams under uniform gravitational loading.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=13</image:loc>
            <image:title>Euler Critical Column Buckling Modes</image:title>
            <image:caption>Fundamental buckling wave shapes and critical load limits across pinned-pinned, fixed-pinned, fixed-fixed, and fixed-free boundary conditions.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=14</image:loc>
            <image:title>ASTM A992 Structural Steel Stress-Strain Curve</image:title>
            <image:caption>Tensile stress-strain curve detailing proportional limit, yield plateau, strain hardening region, necking, and ultimate fracture.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=15</image:loc>
            <image:title>Pratt Truss Nodal Equilibrium Resolution</image:title>
            <image:caption>Free-body force vector decomposition identifying tension (blue) and compression (red) structural truss web members.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=16</image:loc>
            <image:title>Hohmann Interplanetary Elliptical Transfer Orbit</image:title>
            <image:caption>Co-planar two-impulse orbital transfer trajectory between Earth and Mars circular orbits minimizing propellant $\Delta v$ expenditure.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=17</image:loc>
            <image:title>Earth-Sun Five Lagrange Equilibrium Points</image:title>
            <image:caption>Effective gravitational-centrifugal potential contours mapping stable Trojan equilateral points ($L_4/L_5$) and collinear libration portals.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=18</image:loc>
            <image:title>Planetary Roche Tidal Disruption Boundary</image:title>
            <image:caption>Fluid vs rigid satellite tidal disintegration limits explaining planetary ring system formation and lunar fragmentation.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=19</image:loc>
            <image:title>Kepler's Second Law Equal Area in Equal Time</image:title>
            <image:caption>Orbital sector sweep geometry demonstrating perihelion velocity acceleration and aphelion deceleration in eccentric orbits.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=20</image:loc>
            <image:title>Hyperbolic Gravity Assist Slingshot Maneuver</image:title>
            <image:caption>Heliocentric energy gain vector geometry during trailing-side planetary flyby trajectories (Voyager &amp; Cassini style).</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=21</image:loc>
            <image:title>Radiocarbon Carbon-14 Radioactive Beta Decay</image:title>
            <image:caption>Decay curve of radioactive carbon-14 ($^{14}\text{C} \to {}^{14}\text{N}$) with half-life intervals and residual activity ratios.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=22</image:loc>
            <image:title>International Chronostratigraphic ICS Epoch Column</image:title>
            <image:caption>Global boundary stratotype section and point (GSSP 'Golden Spike') chronological hierarchy from Precambrian to Quaternary.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=23</image:loc>
            <image:title>Trilobite Schizochroal Eye Biconcave Calcite Optics</image:title>
            <image:caption>Optical doublet geometry in Phacopina trilobite compound lenses using birefringent optical calcite to cancel underwater distortion.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=24</image:loc>
            <image:title>Ammonite Septal Suture Morphological Evolution</image:title>
            <image:caption>Evolutionary progression of cephalopod internal shell chamber fluting increasing hydrostatic implosion resistance under deep-sea pressures.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=25</image:loc>
            <image:title>Potassium-Argon (40K/40Ar) Isochron Radiometric Dating</image:title>
            <image:caption>Radiometric age determination diagram dating volcanic tuff ash strata bounding early hominid fossil layers.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=26</image:loc>
            <image:title>Acoustic Cylindrical Pipe Standing Wave Harmonics</image:title>
            <image:caption>Displacement and pressure standing wave nodes and antinodes for open cylindrical acoustic resonators from 1st to 4th harmonics.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=27</image:loc>
            <image:title>12-Tone Equal Temperament vs Just Intonation Intervals</image:title>
            <image:caption>Frequency ratio cent comparison chart illustrating pure integer harmonic intervals ($3:2, 4:3, 5:4$) versus tempered 100-cent steps.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=28</image:loc>
            <image:title>Lissajous Orthogonal Harmonic Phase Curves</image:title>
            <image:caption>Harmonic oscilloscope orbital trajectories revealing phase difference $\delta$ and frequency ratios between orthogonal acoustic sinusoids.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=29</image:loc>
            <image:title>Fletcher-Munson Equal-Loudness Contours (Phons)</image:title>
            <image:caption>Human psychoacoustic frequency sensitivity curves illustrating low-frequency attenuation and 3-4 kHz ear canal resonance peaks.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
        </image:image>
                <image:image>
            <image:loc>https://gemsmakers.com/diagram-svg.php?id=30</image:loc>
            <image:title>Doppler Acoustic Frequency Shift Wavefront Dynamics</image:title>
            <image:caption>Wavefront compression ahead of moving sound source and expansion behind, transitioning into supersonic Mach shock wave cone.</image:caption>
            <image:license>https://creativecommons.org/licenses/by/4.0/</image:license>
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            </url>

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        <lastmod>2026-11-03</lastmod>
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