مهندس
في الحركة على نفس الخط المستقيم الذي كان يستمر فيه ينحرف عن مساره بنقطه انتقاله بين الوسطين علاقة بين الضوء والساقط وبين الضوء المنحرف
How to make a toy robotic bug at home. This is a simple robot made out of household materials that can move around on your desk. The materials used are super easy to come by and the projects is awesome so definitely try to DIY.
المقررات المفتوحة الكيمياء العامة " عملي " الكشف عن الشقوق الحامضية - 1 مجموعة حمض الهيدروكلوريك المخفف
مجموعة بالون بوك يمكن استخدام الجهاز لاستكشاف قوانين الحركة بدون طاولة هواء ودراسة القصور الذاتي والسرعة والتسارع الثابت والاصطدامات في بعدين. على سطح أملس مسطح ، يمكن أن تنزلق قرص البالون من خلال دون مقاومة كبيرة. ركوب كرات الصولجان على فيلم من الهواء من إنتاج هروب الهواء من البالونات المنتفخة والمعلقة على كرات الصولجان. تشتمل المجموعة على قطعتين من كرات الصولجان الكبيرة ، واثنين من كرات الصولجان الصغيرة ، وأربعة سدادات مطاطية ، وأربعة أنابيب وأربعة بالونات وأربعة أشرطة مطاطية. BALLOON PUCK SET Apparatus may be used to explore the laws of motion without an air table and to study the inertia, constant velocity and acceleration, and collisions in two dimensions. On flat smooth surface, the balloon puck can glide through without much resistance. Pucks ride on a film of air produced by air escaping from balloons, which are inflated and attached to the pucks. Kit includes two large pucks, two small pucks, four rubber stoppers, four tubes, four balloons and four rubber bands.
http://www.quasarinstruments.com/p-16... The ExtraGene mini centrifuge is a great centrifuge for your lab. With its high reliability, all the accessories you need to run 2.0, 1.5, 0.5 microtubes as well as PCRS strips and tubes this a great unit at a great price.
A Tesla valve, called a valvular conduit by its inventor, is a fixed-geometry passive check valve. It allows a fluid to flow preferentially in one direction, without moving parts. The device is named after Nikola Tesla, who was awarded U.S. Patent 1,329,559 in 1920 for its invention. The patent application describes the invention as follows:[1] The interior of the conduit is provided with enlargements, recesses, projections, baffles, or buckets which, while offering virtually no resistance to the passage of the fluid in one direction, other than surface friction, constitute an almost impassable barrier to its flow in the opposite direction.
Whacky colour changes, magic disappearing water, blowing up dustbins, clouds of steam, thunder air explosions. Are you ready to fasten your seatbelts and enjoy the ‘explosive’ journey? In his talk, Andrew aims to promote chemistry as the science of remarkable changes, which are often overlooked yet so important in our everyday life. And he does it brilliantly by performing an incredible series of 25 experiments in 15 minutes, totally amazing the audience (who rewards him with a long and deserved standing ovation)! Andrew Z. Szydło is an internationally acclaimed chemistry teacher. But he’s definitely not the typical chemistry teacher you would expect… He holds a PhD in the History and Philosophy of Science from UCL, and is an expert on the history of alchemy (his 1994 book ‘Water Which Does Not Wet Hands’ is considered to be the
Explore the relationship between linear (tangential) and angular velocity with this setup. A DC-driven motor produces various rotational velocity at various distances from the motor. Different radii are drawn on the disk and pegs can be positioned at specific radii. A photogate may be attached as well, so the time of one rotation is easily measured. Students will then make measurements to calculate the angular velocity, which will be constant for a given motor speed independent of position. However, the tangential velocity will vary based on the radius of the circular path. Kit includes a rotational table, ruler and calipers. Required but not included are a 6 V power supply and a photogate system.
قائمة بأهم الزجاجيات المستخدمة في التجارب الكيمائية من خلال قناة عمر باسم يشرح كل أداة وآلية استخدامها
معمل مصغر للكيمياء للأطفال فوق 6 سنوات يمكنكم من خلاله إجراء 78 تجربة كيميائية يحتوي على مواد كيمائية آمنة كافة أدوات القياس Stirrer Stick Absorbent Resin Measuring Spoon Baking Soda Rainbow Candy Critric Acid Ballon Dropper Effervescent Tablet Ping Pong Candle Red Cabbage Sodium Acetate Ziplock Mag Chenille Syringe
