橡皮筋房间
The Elastic Grid Room
均匀灰点代表空能介质；大球撑开介质产生持久张力梯度，小球会持续被推向大球（即使大球静止）。点击放置小球，拖拽大球观察。
Uniform dots represent the medium; the large sphere stretches it, creating a persistent tension gradient — the small sphere is continuously pushed inward even when the large sphere is at rest. Click to place the small sphere; drag the large sphere to explore.
类比说明：本演示使用橡皮筋网格房间作为空能介质的定性类比，不是真实引力或 SGT 场方程数值解。参数为教学可视化，请勿与真实物理量直接对应。
Analogy note: this demo uses an elastic grid room as a qualitative stand-in for the Kong-Neng medium — not real gravity or a numerical SGT field solution. Parameters are for teaching only; do not read them as physical measurements.
点击 画布空白处放置橙色小球（会替换已有小球） · 拖拽 蓝色大球 · 两球之间介质更稀疏（双重撑开），外侧更密，小球被推向大球
Click empty canvas to place the orange sphere (replaces existing) · Drag the blue sphere · Between the spheres the medium is sparser (doubly stretched); outside is denser — the small sphere is pushed toward the large one
SGT 核心思想实验：物质撑开介质，介质产生张力，张力的梯度就是引力。均匀张力无引力，有梯度的张力就是引力本身。
橡皮筋类比演示 · 非真实引力 · 非 SGT 数值求解。
SGT core thought experiment: Matter stretches the medium; the medium produces tension; the tension gradient is gravity. Uniform tension yields no gravity — a tension gradient is gravity.
Rubber-band analogy · not real gravity · not a numerical SGT solver.