C\u00e1i y\u00f4 y\u00f4 l\u00e0 \u0111\u1ed3 ch\u01a1i luy\u1ec7n s\u1ee9c kho\u1ebb r\u1ea5t th\u00fa v\u1ecb. Khi ch\u01a1i y\u00f4 y\u00f4, d\u00f9ng tay n\u1eafm gi\u1eef m\u1ed9t \u0111\u1ea7u d\u00e2y qu\u1ea5n quanh tr\u00ean tr\u1ee5c ng\u1eafn c\u1ee7a n\u00f3, r\u1ed3i n\u00e9m n\u00f3 xu\u1ed1ng ph\u00eda d\u01b0\u1edbi. C\u00e1i y\u00f4 y\u00f4 s\u1ebd theo \u0111\u00e0 t\u1eebng v\u00f2ng t\u1eebng v\u00f2ng c\u1ee7a cu\u1ed9n d\u00e2y qu\u1ea5n quanh n\u00f3 n\u1edbi ra m\u00e0 quay. Khi to\u00e0n b\u1ed9 d\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00e9o th\u1eb3ng, c\u00e1i y\u00f4 y\u00f4 l\u1ea1i s\u1ebd quay l\u00ean tr\u00ean, v\u00e0 l\u00e0m cho cu\u1ed9n d\u00e2y qu\u1ea5n quanh l\u00ean tr\u1ee5c ng\u1eafn theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i, cho \u0111\u1ebfn khi n\u00f3 tr\u1edf v\u1ec1 l\u00f2ng b\u00e0n tay. Th\u1ea3 ti\u1ebfp c\u00e1i y\u00f4 y\u00f4 xu\u1ed1ng d\u01b0\u1edbi, n\u00f3 l\u1ea1i s\u1ebd quay tr\u1edf v\u1ec1, c\u1ee9 th\u1ebf l\u1eb7p \u0111i l\u1eb7p l\u1ea1i, th\u00fa v\u1ecb bi\u1ebft bao.<\/p>\n\n\n\n
V\u00ec sao c\u00e1i y\u00f4 y\u00f4 c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng tr\u1edf v\u1ec1 l\u00f2ng b\u00e0n tay nh\u1ec9?<\/p>\n\n\n\n
\u1ede \u0111\u00e2y c\u00f3 m\u1ed9t ki\u1ebfn th\u1ee9c v\u1eadt l\u00ed quan tr\u1ecdng, t\u1ee9c l\u00e0 \u0111\u1ed9ng n\u0103ng v\u00e0 th\u1ebf n\u0103ng c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i cho nhau. Khi c\u00e1i y\u00f4 y\u00f4 n\u1eb1m trong l\u00f2ng b\u00e0n tay, \u0111\u1ed9ng n\u0103ng c\u1ee7a n\u00f3 b\u1eb1ng kh\u00f4ng, th\u1ebf n\u0103ng l\u1edbn nh\u1ea5t. Khi n\u00f3 t\u1eeb trong tay \u0111\u01b0\u1ee3c n\u00e9m xu\u1ed1ng, c\u00e1i y\u00f4 y\u00f4 b\u1eaft \u0111\u1ea7u v\u1eeba quay v\u1eeba chuy\u1ec3n \u0111\u1ed9ng xu\u1ed1ng d\u01b0\u1edbi, v\u00e0 d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a tr\u1ecdng l\u1ef1c, c\u00e0ng quay c\u00e0ng nhanh; \u0111\u1ed9ng n\u0103ng kh\u00f4ng ng\u1eebng l\u1edbn l\u00ean, \u0111\u1ed3ng th\u1eddi theo \u0111\u00e0 kh\u00f4ng ng\u1eebng xu\u1ed1ng th\u1ea5p c\u1ee7a c\u00e1i y\u00f4 y\u00f4, th\u1ebf n\u0103ng kh\u00f4ng ng\u1eebng gi\u1ea3m nh\u1ecf. Khi \u1ea5y, th\u1ebf n\u0103ng c\u1ee7a c\u00e1i y\u00f4 y\u00f4 chuy\u1ec3n th\u00e0nh \u0111\u1ed9ng n\u0103ng. \u0110\u1ebfn khi c\u00e1i y\u00f4 y\u00f4 quay \u0111\u1ebfn \u0111i\u1ec3m th\u1ea5p nh\u1ea5t, \u0111\u1ed9ng n\u0103ng c\u1ee7a n\u00f3 l\u1edbn nh\u1ea5t, th\u1ebf n\u0103ng nh\u1ecf nh\u1ea5t. L\u00fac \u1ea5y, c\u00e1i y\u00f4 y\u00f4 quay nhanh nh\u1ea5t. Sau khi \u0111\u1ea1t t\u1edbi \u0111i\u1ec3m th\u1ea5p nh\u1ea5t, c\u00e1i y\u00f4 y\u00f4 l\u1ea1i s\u1ebd quay l\u00ean tr\u00ean theo cu\u1ed9n d\u00e2y, qu\u1ea5n d\u00e2y v\u00e0o tr\u1ee5c ng\u1eafn theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i. Theo \u0111\u00e0 \u0111i l\u00ean c\u1ee7a c\u00e1i y\u00f4 y\u00f4, t\u1ed1c \u0111\u1ed9 quay c\u1ee7a n\u00f3 c\u00e0ng l\u00fac c\u00e0ng ch\u1eadm. Khi \u1ea5y, \u0111\u1ed9ng n\u0103ng c\u1ee7a c\u00e1i y\u00f4 y\u00f4 l\u1ea1i kh\u00f4ng ng\u1eebng chuy\u1ec3n \u0111\u1ed5i th\u00e0nh th\u1ebf n\u0103ng, cho \u0111\u1ebfn khi quay t\u1edbi \u0111i\u1ec3m cao nh\u1ea5t, n\u01a1i chuy\u1ec3n \u0111\u1ed9ng quay ng\u1eebng l\u1ea1i, \u0111\u1ed9ng n\u0103ng c\u1ee7a n\u00f3 b\u1eb1ng kh\u00f4ng, th\u1ebf n\u0103ng th\u00ec l\u1ea1i l\u1edbn nh\u1ea5t.<\/p>\n\n\n\n
C\u0103n c\u1ee9 v\u00e0o \u0111\u1ecbnh lu\u1eadt b\u1ea3o to\u00e0n n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc, khi kh\u00f4ng c\u00f3 ngo\u1ea1i l\u1ef1c ho\u1eb7c c\u00f4ng c\u1ee7a ngo\u1ea1i l\u1ef1c sinh ra b\u1eb1ng kh\u00f4ng, t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc c\u1ee7a v\u1eadt th\u1ec3 kh\u00f4ng bi\u1ebfn \u0111\u1ed5i. Nh\u01b0 v\u1eady th\u00ec c\u00e1i y\u00f4 y\u00f4 ph\u1ea3i quay v\u1ec1 v\u1ecb tr\u00ed ban \u0111\u1ea7u. Nh\u01b0ng, trong chuy\u1ec3n \u0111\u1ed9ng quay l\u00ean quay xu\u1ed1ng, c\u00e1i y\u00f4 y\u00f4 s\u1ebd m\u1ea5t \u0111i m\u1ed9t ph\u1ea7n n\u0103ng l\u01b0\u1ee3ng do l\u1ef1c c\u1ea3n c\u1ee7a kh\u00f4ng kh\u00ed v\u00e0 l\u1ef1c ma s\u00e1t gi\u1eefa d\u00e2y v\u00e0 tr\u1ee5c ng\u1eafn. N\u1ebfu kh\u00f4ng b\u1ed5 sung n\u0103ng l\u01b0\u1ee3ng, c\u00e1i y\u00f4 y\u00f4 s\u1ebd kh\u00f4ng l\u00ean t\u1edbi \u0111\u1ed9 cao ban \u0111\u1ea7u. Cho n\u00ean, khi ch\u01a1i c\u00e1i y\u00f4 y\u00f4 ph\u1ea3i c\u00f3 k\u0129 x\u1ea3o nh\u1ea5t \u0111\u1ecbnh, kh\u00f4ng ng\u1eebng b\u1ed5 sung cho n\u00f3 m\u1ed9t \u00edt n\u0103ng l\u01b0\u1ee3ng. B\u1ed5 sung n\u0103ng l\u01b0\u1ee3ng nh\u01b0 th\u1ebf n\u00e0o \u0111\u00e2y? Khi c\u00e1i y\u00f4 y\u00f4 quay \u0111\u1ebfn \u0111i\u1ec3m th\u1ea5p nh\u1ea5t, s\u1ee3i d\u00e2y s\u1eafp b\u1eaft \u0111\u1ea7u cu\u1ed9n quanh l\u00ean tr\u00ean, t\u1ea1i kho\u1ea3nh kh\u1eafc \u0111\u00f3 d\u00f9ng tay gi\u1eadt s\u1ee3i d\u00e2y l\u00ean tr\u00ean m\u1ed9t c\u00e1i, l\u00e0m cho t\u1ed1c \u0111\u1ed9 quay c\u1ee7a c\u00e1i y\u00f4 y\u00f4 nhanh th\u00eam m\u1ed9t ch\u00fat, gia t\u0103ng m\u1ed9t \u00edt n\u0103ng l\u01b0\u1ee3ng. Nh\u01b0 v\u1eady, c\u00e1i y\u00f4 y\u00f4 c\u00f3 th\u1ec3 l\u00ean l\u00ean, xu\u1ed1ng xu\u1ed1ng, quay m\u00e3i kh\u00f4ng ng\u1eebng.<\/p>\n\n\n\n
T\u1eeb kh\u00f3a : C\u00e1i y\u00f4 y\u00f4; \u0110\u1ed9ng n\u0103ng; Th\u1ebf n\u0103ng; N\u0103ng l\u01b0\u1ee3ng c\u01a1 gi\u1edbi; \u0110\u1ecbnh<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
C\u00e1i y\u00f4 y\u00f4 l\u00e0 \u0111\u1ed3 ch\u01a1i luy\u1ec7n s\u1ee9c kho\u1ebb r\u1ea5t th\u00fa v\u1ecb. Khi ch\u01a1i y\u00f4 y\u00f4, d\u00f9ng tay n\u1eafm gi\u1eef m\u1ed9t \u0111\u1ea7u d\u00e2y qu\u1ea5n quanh tr\u00ean tr\u1ee5c ng\u1eafn c\u1ee7a n\u00f3, r\u1ed3i n\u00e9m n\u00f3 xu\u1ed1ng ph\u00eda d\u01b0\u1edbi. C\u00e1i y\u00f4 y\u00f4 s\u1ebd theo \u0111\u00e0 t\u1eebng v\u00f2ng t\u1eebng v\u00f2ng c\u1ee7a cu\u1ed9n d\u00e2y qu\u1ea5n quanh n\u00f3 n\u1edbi ra m\u00e0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,7],"tags":[],"class_list":["post-5567","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5567","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=5567"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5567\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5567"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}