創意科學教材儀器嘉里達(理腦思)中小學教具及創意科學實驗儀器設備 www.kelabhk.com Tel : (852)24300221

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Motor Unit model 小電動機小型電動機模型是中學必備實驗儀器。供學生分組實驗或教師教學演示用，直立兩用，使用方便，可使學生熟悉電動機的主要結構。掌握直流電動機的工作原理，了解直流電動機的轉向與電流方向，磁極方向間的關係，使學生知道電能可以轉化為機械能等多種知識。只需駁通±電源, 小電動機便可飛快轉動, 不用繁複安裝。南北兩極磁鐵清楚展示，方便學生認識其原理。 Item No : JHL 734
ELECTRO-Magnetic resistance demo pipe 磁阻演示管 This kit can be used to verify Lenz's law and show how strong the electro-magnetic resistance is. The effect of the kit is very obvious and wonderful. The pipe kit consists of following two parts1. AL pipe with thick wall , 60 x 4.2cm L x Dia. with rectangular windows are evenly arranged along the pipe through which students can watch how two balls fall in the pipe. 2. Two golden rubber balls with 3.2cm dia. and approx. equal weight have the same out-looking. In one of the two balls a cylinder magnet with super strong magnetism-a neodymium magnet-- is contained. Let's call the ball magnet ball Dropping the balls into the pipe separately, you find that the magnet ball falling in the AL pipe take a longer time (about 4-5 seconds) than the other ball. Why? The reason of the phenomenon, obviously is that the current induced in the pipe wall functions while the magnet ball is falling down through the pipe, the direction of the induced magnetic field is opposite to the direction of the magnetic field of the falling magnet. 參考資料: 高中物理第三冊第154頁人教社1997年12月第一版 J.A.M.Clack Magnetic Introduction Experiment, The Physics Teacher Vol 28 No.$ P236 to P238 1990 今日物理Physics Today 第二冊 P.241頁麥思源博士Dr. SY Mak 香港朗文教育出版社 1995年初版 Item No : JHL 602
FLOATING magnetic roller 神奇浮磁滾軸 Very popular apparatus, its applied the repel force of magnets and the resultant force between forces then make the roller floating and balance in air. Suitable for student to learn about magnetic force action, magnetic pole properties, resultant force action and remind pupils invention is very important in human life. 此磁浮滾軸用磁浮力平衡在半空, 由於浮在空氣沒有半點磨擦力, 它能不斷地轉動很的時間, 有如裝了馬達般. Item FMR 8336
NEIDYMIUM Magnet cylinder 超強釹圓柱形磁鐵釹磁鐵是最新一代強力磁鐵, 其表面的磁感應強度達4000高斯以上, 為磁銅的5倍多. 本釹磁鐵為圓柱體狀, 22 dia. x 10 length mm, 28 gm, 能隔著手腕吸住另一面釹磁鐵, 能吸著重達7 - 8 kg 大鐵球. 適用於中學多種磁力實驗當心夾手!! Item no : JHL 603 each pair
NEIDYMIUM Magnet cylinder handle 超強釹圓柱磁鐵手抽專門裝入釹圓柱磁鐵用, 有小螺絲固定柱磁鐵使之不脫落手抽, 可用此手抽提起16磅大鐵球, 使學生感受科學的偉大力量 Item no : JHL 673
NEIDYMIUM Magnet bar 超強釹薄棒形磁鐵釹磁鐵是最新一代強力磁鐵, 其表面的磁感應強度達4000高斯以上, 為磁銅的5倍多. 本釹磁鐵棒 50 mm x 10 m x 5mm thickness 能隔著手腕吸住另一面釹磁鐵, 大鐵球. 適用於中學多種磁力實驗. 小心手指 Item no : JHL 604 each pair
Horseshoe Neodymium Magnet 蹄形釹磁鐵儀本啼形磁的二極靴間的磁場強達5000高斯巴達(即0‧5特斯拉)，利用這一超強磁場可以做幾個很有趣的有關電磁感應的實驗。簡介如下 .一. 硬幣落 "水" 二. 推、拉鋁輪三. 無形的斜坡。 Item No : JHL 731
SPACE wheel 太空電磁轉輪利用電磁動力原理, 轉輪不停地受線圈磁感轉動, 在膠路軌上由左轉至右, 由右轉至左, 如裝上摩打般. 這是一件很有用的儀器去解釋電磁感應產生之動力, Fleming 左右手定律, 能量轉變理論等等. "The Talk of the Galaxy" This device is used to show magnetic induction effect, kinetic & potential energy, the law of thermodynamics and other mysterious forces. A 3-jaws wheel is magnetized by a electromagnetic coil inside the plastic base. The wheel is rolling along the transparent double rail and the energy of wheel is continuously supplied by a 9V d.c. battery . Dimension : 120 x 20 cm Length x width , diameter of wheel 25mm Item no : SPW9928
MAGNETIC Seal & Ball 磁動海獅推球當小海獅小球推前的時候，小球永遠避開小海獅並且不斷轉動；這是一套既簡單又有趣的磁力實驗顯示玩具。It consists of a plastic seal and a colorful plastic ball. If the ball is placed on a table and the seal is brought near it, the ball begins to spin and leaves the seal gradually. If the seal continues to follow the ball, the ball will spin non-stop. Item no : JHL 649
POWERFUL Electromagnet Kit 強力電磁鐵 (一枚大電池操作) The powerful electromagnet kit is a new popular type of physics demonstration apparatus. The kit can produce 60kg of pull using only a 1.5kg dry cell. Even two adults can not pull apart the two parts of the kit; a electromagnet and an armature. Obviously, demonstrating the kit will leave a deep impression about principle, effect and application of electromagnet on students. It will rouse their strong interest in science and technology; help them realize how great is the power of science. The kit contains the following parts : electromagnets (2) armature (3) handle (4) safety screw Item no : JHL 601 each kit (不包括猴子)
SOLAR Energy Display Apparatus 光電池演示器用於演示太陽能電池的功效和光能轉化為電能, 機械能.. 其外觀像個小風扇, 圓形塑膠片面裝有四個 "珪光電池" 扇面則固定在一個小電摩打座上, 用100W 燈泡距離20cm 照射它約幾分鐘, 光電池演示器即能轉動, 置於太陽直射下, 將飛快轉動.. Dimension : 110 x 105 x 135mm Voltage output 1.8V 125mA Item no: JHL 615
HEART to heart 心心相印此教具十分有趣, 將兩個帶 "心" 的鐵架如圖片般放置, 使兩心相對而至靜止. 輕輕撥動其中一顆心, 另一顆心亦會隨之抖動, 故稱之為 " 心心相印 " 此儀器用作演示磁鐵間的吸引現象和解釋重心與G點的關係. Item no : JHL 679
CHARGE & discharge kit電容器充放電演示儀 This kit is very convenience for teacher to demonstrate the feature of storing electricity of capacitor. This apparatus contains a very large capacitor over 160000uF, it contains a 6.3V light bulb to show the discharge current and p.d. , there is a LED to illustrate the direction of current flow. The electrical charging current can be produced by a small handy electrical generator supplied with the kit. Dimension : 240 x 130 x 140mm Weight 1.25kg . The kit contains complete circuit , light bulb & holder, LED indicator and handy electrical generator. Item no : JHL 693
Oersted's Apparatus BIG 特大奧斯特儀用作演示通電導線周圍存在磁場及磁場的方向. 它是一長方形金屬框來充當導線和導線架, 裝上磁針合為一體. 下連有有機玻璃支桿和鐵底坐. 演示時把砍香蕉座接電, 磁針便按輸入電流方向而作出某方向的轉動. Dimension : 260 x 85 x 170mm , weight 175g Item no : JHL 681
Magnetic Butterfly 磁貼蝴蝶底部有小磁石和雙面膠紙, 把小蝴蝶貼在生物室裏可增添不少大自然感覺 , 一套5對, 每對大小各一隻 Item no : JHL680 pack of 5 pair
Magnetizer & Demagnetizer充磁器本充磁器可用於各種軟磁材料如磁鋼, 磁鐵的充磁和退磁, 因而適用於學校實驗室中舊磁鐵再充磁回復磁力.在物理教學中可演示磁化現象, 跳圈等需要強磁場的實驗. 鐘錶行業用作退磁等設備. 本儀器充磁約5秒, 直流電. 退磁時以交流電流 Size: 160 x 90 x 95mm Weight 1.5 kg, 220V a.c. Item no : JHL 682
HANDY Dynamo 袖珍手搖發電機用手將把手轉動，　此發電機便輕易把小燈泡之類的設備亮起, 好使好用 !!方便老師應用於一些需要宜直流電的9小實驗. Dimension : 180 x 90 x 40mm Output 6V 0.2A Item no: JHL 612
Ring magnet Kit 環形磁石座特式: 每個磁環的南北面佳塗上紅白色, 給學生很易發覺repel的擺放位置及性質, 比一般同類儀器要自己猜估磁極好得多磁座用精美彩色acrylic造成, 15mm, 鋁棒. 外觀十分好看. Item No : JHL 669
Electrostatic feather 驗電羽用一帶電棒(如用毛皮摩擦個的硬橡膠棒等)接觸驗電羽上端的金屬圓帽時，帽上的絲線會張開成一定陳角度、如下圖。若用導線將圓帽與起電機(如韋氏起電機、范氏起電機)相連接，絲線張開的角度會更大。 Item No : JHL 728
Electroscope Plastic 箔片驗電器透明膠盒設計, 輕便不易損壞。盒面有刻度作量度箔片被靜電升高的位置 Item No : JHL 729
Sparkler Light (Disco magic light) 電離子魔燈電離子魔燈是採用高級新科技, 最新研制的高級工藝品. 其原理是利用高頻電流作用於特種氣體, 使氣體發出輝光束.(like Cathode ray tube) 球體發出的負離子具有清空氣作用.當周圍有音樂或聲響時, 強力瑩光束會隨著旋律和節奏不斷舞動改變並沖向玻璃球壁,十分奇幻, 極富動感, 或當手觸踫玻璃球壁時,強力瑩光束立刻走向手指頭處, 仿似有觸覺和有生命般. The glass ball of the light is made by a kind of special material which can sustain a strong crash without being broke. It can also endure a high temperature as 5520C. It's easily to be placed by laying on a plane. The light can burn for a ling time wasting little energy and without lowering the lighting effect of the ball. Power supply 220Va.c. Diameter of ball 100mm, weight 0.73kg, Overall Dimension : 115 x 115 x 190 L x W x Height mm Item no : SPP 9922
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