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دبیرستان غیر دولتی دخترانه آتیه (کرج - مهرشهر) - سلام آتشین
 
دبیرستان غیر دولتی دخترانه آتیه (کرج - مهرشهر)
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مدیر وبلاگ : دبیرستان آتیه
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یکشنبه 5 آذر 1391
سلام آتشین
روی میز یک صفحه کاغذ قرار دارد. شما آن را به دست گرفته در حالیکه فندکی در دست دارید، به تماشاچیان تعظیم کرده و در ضمن، فندک روشن را به کنار کاغذ میزنید. یک مرتبه کلمه سلام به خط درشت روی کاغذ ظاهر میگردد در حالیکه این نوشته شعله میکشد و تماشاچیان را غرق در شگفتی میسازد.

مواد و وسایل مورد نیاز:
10 گرم نیترات پتاسیم که در 25 سانتی متر مکعب آب حل کرده اید.
یک قلم نقاشی کوچک
یک صفحه تقریبا بزرگ کاغذ ضخیم که در ضمن کمی قابل نفوذ باشد.

روش کار:
بعد از تهیه این وسایل، ساعتها قبل از اجرای نمایش و دور از چشم تماشاچیان کلمه سلام را با محلول غلیظ نیترات به وسیله قلم نقاشی روی کاغذ مزبور بنویسید. پس از خشک شدن آن دوباره همین کلمه را روی آن مجددا بنویسید و این کار را چند بار تکرار کنید تا ضخامت این نوشته به حد کافی باشد. ضمنا باید تمام حروف این کلمه را به هم متصل کنید. به محض تماس فندک با یک نقطه از نوشته، قسمتهایی از کاغذ که به وسیله نیترات پتاسیم اکسید شده است میسوزد و ایجاد روشنایی میکند. به جای کلمه سلام میتوانید کلمات مناسب دیگری به همین شیوه روی کاغذ بنویسید و آتش بزنید.




نوع مطلب : شیمی، 
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