内行星相位模拟
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①本范例演示了地球观测者所见的水星和金星等内行星的相位变化现象;②涉及的核心数学概念包括圆、旋转、轨迹和向量等;③作图要点提炼自构造摘要,使用了Circle(圆)、Rotate(旋转)、Locus(轨迹)、Vector(向量)等GeoGebra命令和对象;④适合高中阶段学习天文学和几何的学生,用于理解行星运动和相位变化原理。
GeoGebra 命令及参数
Circle(A, f) → f_1Rotate(B, α, A) → B'Rotate(B, γ, A) → B'_1Ray(A, B'_1) → gIntersect(f_1, g) → C,Segment(C, B') → jCircle(A, m) → pIntersect(p, yAxis) → I, JIntersect(p, xAxis) → K, LCircumcircleSector(F, K, I) → e_1Area(e_1) → s_1Angle(C, B', A) → εCircle(A, e) → qIntersect(q, yAxis) → D, EEllipse(D, E, F) → sArea(s) → t_1Area(s') → w_1Angle(A, C, B') → ζAngle(B, A, B') → βCircle(A, B) → cCircle(B', a) → dTangent(B', c) → b,Angle(B, A, B'_1) → δCircle(C, h) → kTangent(C, f_1) → i,Segment(A, B') → lArea(p) → nPointIn(p) → PunktpArea(s) → oPointIn(s) → Punkts_1If(ε ≥ 90°, x = u, x = t) → a_1Intersect(a_1, xAxis) → GSphere(B', a) → b_1OrthogonalPlane(B', l) → c_1CircumcircleSector(F, L, I) → d_1Angle(g, l) → λCircle(H, 0.5, xOyPlane) → g_1Angle(l, g) → ηLocus(M, α) → Ortslinie1Vector(O, N) → u_1Point(u_1) → PVector(P, Q) → v_1Tangent(C, c) → h_1, i_1Angle(h_1, i_1) → θOrthogonalLine(R, xAxis) → j_1OrthogonalLine(S, v_1, xOyPlane) → k_1Segment(H, C) → l_1Point(Ortslinie1) → TOrthogonalLine(T, v_1, xOyPlane) → m_1Point(m_1) → USegment(U, V) → n_1Point(m_1) → WSegment(W, V) → p_1Locus(V, α) → Ortslinie2PointIn(e_1) → Punkte1PointIn(s) → PunktsPointIn(s') → Punkts'