Will optical fibers allow light to escape from the sides, like a neon sign?

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营销cookie用于对网站上的访客进行追踪。其目的是为了显示对个人用户来说相关及有吸引力的广告，因此，对于发布人和第三方广告商来说更为宝贵。
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  LogsDatabaseV2:V#||LogsRequestsStoreStores the user's video player preferences using embedded YouTube video
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  VISITOR_INFO1_LIVE嘗試預估使用者在整合 YouTube 影片頁面的頻寬。
  最大存储时长: 180 天类别: HTTP Cookie
  YSC登錄唯一識別碼，以保存使用者曾經觀賞的 YouTube 影片統計資料。
  最大存储时长: 临时类别: HTTP Cookie
  yt.innertube::nextIdRegisters a unique ID to keep statistics of what videos from YouTube the user has seen.
  最大存储时长: 永久类别: HTML 本地存储
  ytidb::LAST_RESULT_ENTRY_KEYStores the user's video player preferences using embedded YouTube video
  最大存储时长: 永久类别: HTML 本地存储
  YtIdbMeta#databasesUsed to track user’s interaction with embedded content.
  最大存储时长: 永久类别: IndexedDB
  yt-remote-cast-availableStores the user's video player preferences using embedded YouTube video
  最大存储时长: 临时类别: HTML 本地存储
  yt-remote-cast-installed儲存使用者使用內嵌 YouTube 影片的影片播放器偏好設定
  最大存储时长: 临时类别: HTML 本地存储
  yt-remote-connected-devices儲存使用者使用內嵌 YouTube 影片的影片播放器偏好設定
  最大存储时长: 永久类别: HTML 本地存储
  yt-remote-device-id儲存使用者使用內嵌 YouTube 影片的影片播放器偏好設定
  最大存储时长: 永久类别: HTML 本地存储
  yt-remote-fast-check-period儲存使用者使用內嵌 YouTube 影片的影片播放器偏好設定
  最大存储时长: 临时类别: HTML 本地存储
  yt-remote-session-app儲存使用者使用內嵌 YouTube 影片的影片播放器偏好設定
  最大存储时长: 临时类别: HTML 本地存储
  yt-remote-session-name儲存使用者使用內嵌 YouTube 影片的影片播放器偏好設定
  最大存储时长: 临时类别: HTML 本地存储
- edmundoptics.com.tw
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  _mkto_trk包含訪客行為及網站互動等資料。這是在電子郵件行銷服務 Marketo.com 的情境中使用，可讓網站透過電子郵件鎖定訪客。
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  gwcc啟用 Google Website Call Conversions - 如果訪客在「聯絡我們」子頁面中點選通話，此項功能就會登錄。本資訊用於統計和行銷目的。
  最大存储时长: 14 天类别: HTTP Cookie
  m南韓企業 Naver Analytics 使用的追蹤像素，用於追蹤網站參與度
  最大存储时长: 14 天类别: HTTP Cookie
  NWB由南韓企業 Naver Analytics 用於網頁分析，以便追蹤及回報網站流量
  最大存储时长: 14 天类别: HTTP Cookie
  NWB_LEGACY由南韓企業 Naver Analytics 用於網頁分析，以便追蹤及回報網站流量
  最大存储时长: 14 天类别: HTTP Cookie
  wcs_bt由南韓企業 Naver Analytics 用於跨站網頁分析
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Will optical fibers allow light to escape from the sides, like a neon sign?

Optical fibers are specifically designed not to allow light to escape from the sides; this is why they may be used for communications purposes. Bending a fiber into a tight radius, however, increases the angle in which the light strikes the inside of the cladding, allowing some light to exit out of the fiber. Removing part of the cladding layer around the core by abrasion may also produce the desired effect, but starts to change the component from a fiber optic plastic strand to just a plastic strand.

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