Misterioso Círculo Preto que aparece no Céu

Todos os Fatos

[{"selector":"#anim-3b32090d-6a79-4684-a956-c118945a7f22","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9930068d-0b0e-486d-89db-41d27a8fa6a7","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3625d6fd-b2f8-47f8-ab1a-916c641ce5f0","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2ffe5c39-afea-4ec8-9a8a-b207a9fa9b60","keyframes":{"transform":["translate3d(-100%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Provavelmente você já teve ter visto nas mídias sociais e pela internet o fenômeno de um círculo preto no céu.

[{"selector":"#anim-0a6d3e59-a022-429f-b092-2b6303b02ca8","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7cb7f1ca-e381-4c2b-920c-288dd175739e","keyframes":{"transform":["translate3d(-115.18988%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Há registros de aparições em vários países, como Estados Unidos, Reino Unido, Sibéria e até no Brasil.

[{"selector":"#anim-96b35f40-a0ef-48cf-9574-9c41ac49eee7","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-54b7b2a1-ae8b-4812-8bfe-f614c6ad87bc","keyframes":{"transform":["translate3d(-114.87342%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Esse evento trata-se de um vórtice toroidal.

[{"selector":"#anim-68bc1fb0-b633-42b5-9e4b-48fdc24142ab","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-039f7782-e302-4ec5-a919-edad7753d749","keyframes":{"transform":["translate3d(-115.18988%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Vórtices toroidais podem ser vistos no ar, na água e no fogo.

[{"selector":"#anim-eb548b07-f2cd-4dd9-935d-bf1be5cd6486","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6378808c-be0d-4b8e-8c44-4d2ef15fb5c4","keyframes":{"transform":["translate3d(-114.87342%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Um anel giratório impressionante que pode ser criado a partir de água, fumaça ou faíscas é chamado de vórtice toroidal.

[{"selector":"#anim-ab1f6490-4d1e-44a0-bd0c-0f6c6e429650","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7b646468-3358-4702-a889-76010a45fd86","keyframes":{"transform":["translate3d(-114.87342%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Outro nome para o vórtice toroidal é um anel de vórtice.

[{"selector":"#anim-9e99b91a-c32f-4d06-811f-811ccc41c0ab","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5fb29362-b94f-4d8c-b01c-a7c03e04a56f","keyframes":{"transform":["translate3d(-115.50632%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

O fluido que compõe o círculo tem a forma de auréolas giratórias.

[{"selector":"#anim-d12a60b3-ba1c-46b7-b8c5-0608f004a0c4","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e8c4af1b-db39-44ed-821d-9fb528b5ddeb","keyframes":{"transform":["translate3d(-115.50632%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Hermann von Helmholtz, um cientista alemão, investigou o vórtice toroidal. Helmholtz escreveu sobre as equações integrais hidrodinâmicas, que mostram anéis de fumaça de vórtices, em um estudo publicado em 1867.

[{"selector":"#anim-69306aa7-c0ad-44a3-922e-5fbd037b9bd8","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b3938638-4a0e-4ff7-9e9b-c54690098f36","keyframes":{"transform":["translate3d(-115.18988%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

[{"selector":"#anim-7c64d1c6-9e2a-43a5-8b81-62dafa75c4f4","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.5)","offset":0.33},{"transform":"scale(0.95)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":1450,"easing":"ease-in-out","fill":"both","iterations":1}] ver Mais