We theoretically investigate the illusion device designed by a conformal transformation that can render an elliptic defect behave like a flat mirror. Different from illusion devices consisting of the complementary medium and anti-object with negative permittivity and permeability. our proposed illusion device requires only isotropic positive permittivity medium. It offers a possible r... https://homehardware4ues.shop/product-category/frameless-glass-shower-door-parts/