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A pressure cooker bomb is an improvised explosive device (IED) created by inserting explosive material into a pressure cooker and attaching a blasting cap into the cover of the cooker. Pressure cooker bombs have been used in a number of attacks in the 21st century. Among them have been the 2006 Mumbai train bombings, 2010 Stockholm bombings (failed to explode), the 2010 Times Square car bombing attempt (failed to explode), and the 2013 Boston Marathon bombings. On Canada Day 2013, pressure cooker bombs failed to explode at the Parliament Building in Victoria, British Columbia. ==Description== Pressure cooker bombs are relatively easy to construct. With the exception of the explosive itself, most of the materials required can be easily obtained. The bomb can be ignited using a simple electronic device such as a digital watch, garage door opener, cell phone, pager, kitchen timer, or alarm clock.〔 The power of the explosion depends on the size of the pressure cooker and the amount and type of explosives used.〔(【引用サイトリンク】title=POTENTIAL TERRORIST USE OF PRESSURECOOKERS )〕 Like a pipe bomb, the pressure cooker contains the energy of the explosion and allows it to build up before it releases, and allows low explosives to be used to produce a relatively large explosion. The explosion of the metal pressure cooker itself also creates potentially lethal fragmentation.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pressure cooker bomb」の詳細全文を読む スポンサード リンク
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