首頁 » 推薦 » 18個證明「物理其實是一個魔術學科」的不可思議療癒小實驗。
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18個證明「物理其實是一個魔術學科」的不可思議療癒小實驗。

聽到物理這兩個字時,你的第一個反應是什麼呢?感到頭痛,還是毫無興趣?作為一門學科,物理或許不是那麼討喜,但在生活中我們處處可以見到物理學的印證,而且它們就跟變魔術一樣神奇!IG上的physicsfun就致力以一些簡單的實驗來讓我們看到物理知識,證明物理也能帶來無限樂趣!

 

▼1. 要如何創造出自走的火車?只要在一顆電池的兩端吸附上磁鐵,再讓它穿過銅線圈,電池就會自動跑起來了!原因是磁鐵能引導電力,所以電池週邊形成了磁場,進入線圈時這個磁力與銅線產生作用,便會推動它前進。

Faraday Train: two magnets, one battery, and a coil of bare copper wire are the simple essence of this self propelled craft. The magnets conduct electricity, thus when put in contact with the coil current will flow creating a solenoidal magnetic field in the vicinity of the battery, which in turn pushes on the magnets at each end of the battery moving the craft along. The spherical neodymium magnets used allows the craft to slide along the coil with minimal friction. ➡️ Follow the link in my profile to buy the parts to make your own and to find many of the items featured here on @physicsfun #faraday #faradaytrain #physics #physicstoy #coil #solenoid #electromagnet #electromagnetism #neodymium #magnet #ampere #ampereslaw #magneticfield #magneticrepulsion #magneticforce #science #maker #dyi #scienceisawesome #backemf



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▼2. 混合光的三原色紅、綠、藍之後,就可以得到黃色、洋紅、青色,這在小球上的投影清晰地顯示出來了!

RGB Color Addition: three LED light boxes demonstrate the additive nature of colored light. Mixing Red, Green, and Blue to create Yellow, Magenta, and Cyan. An object casts shadows showing the following mixings: R+G=Y, G+B=C, and R+B=M. Adding all three R+G+B produces White (a little pinkish here as the Red is a little bit bright for complete white balance). RGB color addition is the basis for all computer and TV displays- all the colors you are looking at right now on your screen are made from adding pixels of R G and B in different proportions and intensities! ➡️ This video features Light Blox available from Laser Classroom @laserclassroom. Follow the link in my profile for info on where to get these and many other items featured on @physicsfun. #physics #physicstoy #RGB #RGBcolor #optics #shadow #coloraddition #visualperception #colorperception #science #wavelength #frequency #scienceisawesome

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▼3. 只要把一小塊釹的磁性立方體,放在磁性相異的熱解石墨中,產生的磁力作用就會讓小立方體不停跳舞。

Diamagnetic Trap Levitation: tiny neodymium cube magnet trapped between two diamagnetic discs of pyrolytic graphite. Diamagnetic substances only have magnetic fields of their own when placed in an external magnetic field from another source- here the cube shaped magnet supplies the field. Diamagnetic fields are pretty weak, so the top magnet is adjusted to help lift the tiny magnet against gravity where the slightest air currents can send it dancing. ➡️ Follow the link in my profile for info on where to get a device like this one and many of the items featured here on @physicsfun #diamagnetism #physics #physicstoy #neodymium #magneticfield #magnetism #levitation #maglev #science #pyrolyticgraphite #scienceisawesome

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▼4. 平行的玻璃鏡面創造出了光的折射與反射,讓蠟燭的火光有了無限延伸的錯覺。

Infinity Mirror Tea-light Candle: parallel partially mirrored panes of glass create the illusion of multiple candle flames through the physics of reflection and refraction. ➡️ Follow the link in my profile for info on where to get this and many other amazing items featured here on @physicsfun #physics #physicstoy #refraction #tealight #mirror #infinitymirror #portal #reflection #optics #science #scienceisawesome

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▼5. 這一片板子是能呈現溫度差異的液晶,當手印上去之後,可以清楚看到殘留的溫度變化。

Thermochromic Chiral Liquid Crystals: the thin layer changes color as the molecules of the liquid crystal change orientation and spacing during the phase transition from liquid (warm) to crystal (cool). ➡️Follow the link in my profile for info on where to get this and many other items featured here on @physicsfun #liquidcrystal #physics #physicstoy #Exploratorium #phase #phasetransition #chiral #science #thermometer #braggdiffraction #diffraction #interference #solidstate #chemistry #science #scienceisawesome

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▼6. 溫度的變化可以影響許多事情,當導線末端的這個磁鐵被加到所謂的「居禮溫度」時,磁性就會降為零(這個溫度取決於物質的化學成分和晶體結構);但只要稍微遠離冷卻,磁性就會恢復,因此只要保持熱源供應,這塊磁鐵就會持續擺動。

Curie Point Heat Engine: when the magnet on the end of the wire heats up to a particular temperature (the Curie point) its magnetic field is temporarily lost until it cools. The engine design uses a second magnet to pull the swinging magnet back into the heat source once the magnetic field is reestablished. Repetition of this process creates mechanical motion as long as the heat source is fueled. ➡️ Follow the link in my profile for info on where to get this and many of the amazing devices featured here on @physicsfun #PierreCurie #curiepoint #magnetism #magnets #magneticfield #heat #heatengine #physics #physicstoy #candle #neodymium #science #scienceisawesome

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▼7. 藝術跟物理學並不一定是背道而馳的兩門學科,藝術家Francois Dallegret就以壓刻力層板夾住了這5000顆不鏽鋼球,但這些球體會自然產生一些變化,有些地方空了出來,有些球則因為靜電在頂部漂浮。

Atomix: art and model of crystal structure and mathematical packing problems. Created by artist Francois Dallegret from acrylic and 5000 stainless steel spheres. Crystallographic defects such as vacancies and planar discontinuities can be created. Some spheres float at the top due to static charge. ➡️ Follow the link in my profile for info on how to obtain many of the amazing items featured here on @physicsfun #art #atomix #crystallographic #mathtoy #physics #physicstoy #packing #packingproblem #science #cannonballproblem #lattice #scienceisawesome

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▼8. 一個對稱軸能帶給立方體有趣的改變,當握住它旋轉時,這個立方體可以轉動超過1分鐘以上。(影片為簡短版本)

Cube Top: symmetry axes are often associated with interesting physics. For instance- a cube can spin like a top. This stainless steel top was produced in the studio of @kyleskinetics and can spin for more than a minute. The final half second shown here in 250 fps, watch with sound on for best effect. ➡️ Follow the link in my profile for info on how to obtain many of the amazing items featured here on @physicsfun #spin #spinningtop #cube #physics #physicstoy #top #symmetry #axis #rotation #rotationalinertia #moment #stability #curious #kyleskinetics #science #scienceisawesome

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▼9. 小小的蠟燭就可以做出一個蒸汽引擎!在這小台的蒸汽機下,只要點燃蠟燭,上面的飛輪就可以快速運轉。蒸汽的發明實在很聰明啊!

Tea Candle Steam Engine: a functional piston steam engine complete with boiler and flywheel. Takes about 2 minutes to get going after the candle is lit. The invention that powered the industrial revolution on a desktop! Made by Wilesco. ➡️ Follow the link in my profile for info on where to get this and many other items featured here on @physicsfun #physics #physicstoy #heatengine #steamengine #thermodynamics #candle #science #scienceisawesome

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▼10. 當一個沙漏被包在水柱中時,會發生什麼事情呢?在水柱被倒轉之後,沙漏的沙子開始往下傾瀉,這時候玻璃的中心會開始變化,並緩慢開始上升。

Floating Hourglass Puzzle: famous physics puzzle- why does the hourglass not start rising right away? The glass only ascends after about half of the sand has transferred to the lower bulb. The hourglass is a normal glass timer, it is submersed in plain water, and the main tube has an inner diameter which is at least 2mm larger than the diameter of the glass. A simple physics property of the hourglass changes and explains this behavior. I'll post the answer in a few days. ANSWER: As the sand moves from top to bottom the center of mass of the glass changes. Initially the glass is top heavy and wedges against the walls of the cylinder where friction holds it down. Thanks for all the thoughtful and creative comments! ➡️ Follow the link in my profile for info on where to get a version of this physics puzzle and many of the amazing items featured here on @physicsfun #physics #physicstoy #physicspuzzle #puzzle #buoyancy #hourglass #float #gravity #torque #force #friction #science #scienceisawesome #floatinghourglass

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▼11. 來看看三顆玻璃球能帶給我們什麼驚喜。事實上這三顆玻璃球內蘊含了些許的氧化鈾,所以在紫色雷射筆照射下,便會散發出綠色的光芒!當然我們都知道鈾是放射性物質,但這樣微量的鈾並沒有風險。

Uranium Glass Marbles: the very small quantities of uranium oxide in this glass give it its green color and produces brilliant fluorescence under a 405nm violet laser pointer. Uranium is of course radioactive but the tiny amount in this kind of glass poses no risk. The florescence has nothing to do with the radioactivity- in fact it is myth that radioactive items glow! ➡️ Follow the link in my profile for info on where to buy this and many other items featured here on @physicsfun #uranium #uraniumglass #uraniummarble #marble #laser #405nm #laserpointer #violet #physicstoy #physics #glass #radioactive #giegercounter #science #UV #ultraviolet #glow #science #scienceisawesome

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▼12. 一個磁針的陀螺跟一個迴紋針就可以來玩這個把戲,當迴紋針碰觸到陀針尖端時,就會因為牛頓第三運動和轉慣動量持續運動。

Paperclip Magnetic Top: the magnetic tipped top attaches to the perimeter of the paperclip- but since the top has much more mass, the paperclip is put into curious motion due to Newton's 3rd law and the top's rotational inertia. This transparent version allows full view of the moving clip. Patented in 1946 under the name Hoy-Poy Top, this antique kinetic art toy made it into my collection as a gift from the folks at @shirepostmint- thanks! ➡️ Follow the link in my profile for info on where to get tops like this one and many other physics toys featured here on @physicsfun #top #spinningtop #vintagetoy #newtons3rdlaw #physics #physicstoy #angularmomentum #relativemotion #magneticfield #magnetic #kineticart #science #centerofmass #magnetictop #scienceisawesome

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▼13. 延續著前面電池、磁鐵與銅線圈的奇妙關係,當你把銅線圈掛上兩極裝著磁鐵的電池時,一部小小的電動機便出現了!

Self Propelled Homopolar Motor: cylindrical neodymium magnets supply the static magnetic field for this motor and become the wheels of a very simple vehicle with an AA battery as the energy source. As soon as both ends of the copper wire make contact an electric current will flow which in turn induces a magnetic field around the wire. This induced field around the copper wire will then interact with the neodymium magnets on each end causing them to spin- a wonderful example of a motor with minimal components. ➡️ Follow the link in my profile for info about where to get this and other items featured here on @physicsfun #homopolar #motor #homopolarmotor #physics #physicstoy #electromagnetism #magnets #neodymium #ampereslaw #electromagnet #current #copper #selfpropelled #science #scienceisawesome

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▼14. 有沒有覺得這骰子實在長得很奇怪?事實上它就跟一般的骰子一樣,骰起來是完全公平的。原因就是它的每一面都跟另外一面對稱。

Skew Dice: these unusually shaped dice are completely fair- roll them and the probability of outcomes are identical to a standard set of dice! The odd shapes are a special type of polyhedra called asymmetric trigonal trapezohedra which come in right and left handed versions- this set has one of each (mirror images of each other). What allows this shape to be fair like a cube has to do with the property of being isohedral, where each face of an object will map onto all other faces via a symmetry of the object. Manufactured by The Dice Lab. ➡️ Follow the link in my profile for info about where to get these and many other items featured here on @physicsfun #mathtoy #geometry #physics #physicstoy #fairdice #isohedral #polyhedra #skewdice #trigonal #probability #mirrorsymmetric #trapezohedron #dice #science #mathstoy

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▼15. 這個瓶子裡裝的不是一般的水,而是水和酒精的混合物,其中金色的正是鐵磁流體;當磁性物直靠近時,這個流體就會因為磁力和表面張力等產生有趣變化。(莫名療癒啊!)

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▼16. 橡皮筋連接了這兩顆球體,當它被纏繞在一起時,旋轉慣性會讓它自動恢復原狀。

Centripetal Spheres: two ball bearings connected by a rubber band orbit each other as energy oscillates between elastic potential energy and rotation kinetic energy. Just wind up the rubber band and let go. When the rubber band has unwound the rotational inertia of bearings winds it back up until it changes direction. ➡️ Follow the link in my profile for info on where to get the supplies to make your own. #centripetal #physics #physicstoy #kinetic #kineticenergy #kineticart #elastic #elasticenergy #ballbearings #sphere #rotationalkineticenergy #angularmomentum #science #scienceisawesome

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▼17. 這是一個獨特的動力模型,當用不同方向、力度旋轉時,它會呈現截然不同的變化。誰說物理模型就不能是一件藝術品?

The Helicone: an interactive kinetic sculpture designed by John Edmark and distributed by playableArt. With a bit of practice I finally mastered the transformation in both directions: A snap of the wrist imparts angular momentum to the laser cut wood petals which then rotate until an internal mechanism stops their motion with predetermined spacing- a helix transforms to an abstract pine cone. A second snap of the wrist in the opposite direction returns the helix. ➡️ Follow the link in my profile for info on where to get this and many other items featured here on @physicsfun #kineticart #angularmomentum #physicstoy #physics #rotation #rotationalinertia #art #science #scienceisawesome

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▼18. 大家小時候有沒有做過這樣的實驗呢?只要在馬蹄鐵上方放下鐵屑,就可以清楚觀察到它的「磁力」,讓它變成有形的運動!

Iron Filings in Silicone Oil Suspension: visualizing the invisible- the magnetic field lines around a horseshoe magnet. In the presence of a magnetic field, ferromagnetic materials (such as iron) temporarily become magnets. Here the iron filings become dipole magnets and link up and align like tiny compass needles to follow and reveal the magnetic field lines associated with the permanent magnet underneath. Viscous silicone oil temporarily keeps the iron particles suspended yet allows for rotation and repositioning under the influence of the magnetic field. ➡️ Follow the link in my profile for info on where to obtain this device and many other items featured here on @physicsfun #physics #magnetic #magnetism #magneticfield #physicstoy #dipole #dipolefield #demonstration #silicone #physicsdemo #horseshoemagnet #electromagnetism #science #scienceisawesome

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我們的生活中充斥著許多物理原理,光從文字或考試上理解它們當然會顯得乏味,但換成實際操作的感覺就完全不同啦!有興趣得不妨也試試看其中幾種,或是前往IG欣賞更多! 

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