重力電池原材料

硫酸銅，蒸餾水，鎂帶/鎂片/鋅片/鋅電極，粗銅絲/銅片/銅電極，硫酸，燒杯，電線。

1.制備硫酸銅飽和溶液

向裝有硫酸銅晶體的燒杯中加入蒸餾水至固體全部溶解

2.以硫酸銅溶液為下層電解質(zhì)溶液，加入上層液體

沿?zé)诰徛徛尤胝麴s水，體積與硫酸銅溶液相仿

3.放入電極

將準(zhǔn)備好的電極緩慢放入液體，盡量不要引起液面分層處的液體互相混合，先放銅電極

4.觸發(fā)反應(yīng)

向上層液中滴入數(shù)滴硫酸（或其溶液），在上層活潑金屬電極產(chǎn)生起泡后2~5小時(shí)電池即完成了激活

1. 硫酸銅溶液不一定要飽和，但越濃越好。一方面，越濃電解質(zhì)溶液可使電池內(nèi)部反應(yīng)更快，可獲得更大的電流；另一方面，硫酸銅溶液濃度越大密度也越大，可更好保證兩種電解質(zhì)溶液不互溶。

2. 金屬電極的表面積越大越好，這樣反應(yīng)表面積變大，電流強(qiáng)度隨之變大

3. 此電池可供二極管發(fā)光

4. 當(dāng)下層硫酸銅溶液隨著反應(yīng)時(shí)間逐漸變稀時(shí)可以直接向燒杯中投入大塊硫酸銅晶體補(bǔ)充

5. 如果上層活潑電極一直生成氣泡并消耗，可在不使用時(shí)拔出此電極

(以鋅為例)

硫酸銅溶液中： Cu ² 2e^- == Cu

上層水中： 1. H₂SO₄ Zn== ZnSO₄ H₂ 2.Zn - 2e^- ==Zn ²

液面分界處充當(dāng)鹽橋作用

1. 1.Pour copper sulfate (the blue granules) over a copper electrode in a glass.

2. Fill it with distilled water.

3. Add a crow's-foot-zinc electrode, and short-circuit the battery for 24 hours to kick-start the battery reaction.

4. Connect to the device of your choice. Yields one volt.

People used to make a lot of things at home. They churned their own butter, cooked food without microwaves, and knitted pairs of socks. Some hundred years ago, people even made their own electricity: DIY batteries powered their doorbells and telegraphs.

Today, batteries meant for heavy use are rechargeable. But how do you get power when there is no grid"renewed," which meant replacing or replenishing their chemicals to give them new energy. You′d top them off with then-common general-store items like crow′s-foot zinc, blue vitriol, black oxide of manganese, and caustic soda. (The latter is still available in stores, but now it′s called Drano.)

One particularly photogenic type of battery was known as a "gravity cell," because gravity is what held it together. Typically used to power telephone and telegraph circuits, it consisted of a solution of blue vitriol (known these days as copper sulfate and sold in garden centers for pond treatment) on the bottom and a layer of zinc sulfate on top, kept separate only by their slightly different densities.

At the top, the electrode gives off zinc ions, while at the bottom, copper sulfate is reduced into copper metal. Together these complementary reactions produce just over one volt; string five batteries in series, and you get enough power to run a flashlight or charge an iPod. Any movement disturbs the delicate layers, ruining the battery, but if you′re careful, you can drop in new crystals of blue vitriol as needed, and the battery will run for years.

There is even talk of running electric cars on zinc-air or aluminum-air batteries. Like gravity cells, these types of batteries can be renewed instantly by dumping in more zinc or aluminum, rather than plugging them into a charger for hours on end-which should make for much shorter lines at the corner battery station.

物體由于地球的吸引而受到的力叫重力 。重力的施力物體是地心。重力的方向總是豎直向下。物體受到的重力的大小跟物體的質(zhì)量成正比，計(jì)算公式是：G=mg，g為比例系數(shù)，重力大小約為9.8N/kg，重力隨著緯度大小改變而改變，表示質(zhì)量為1kg的物體受到的重力為9.8N。重力作用在物體上的作用點(diǎn)叫重心。

地球的吸引作用使附近的物體向地面下落。萬(wàn)有引力是太陽(yáng)系等星系存在的原因；沒(méi)有萬(wàn)有引力天體將無(wú)法相互吸引形成天體系統(tǒng)。萬(wàn)有引力同時(shí)也使地球和其他天體按照它們自身的軌道圍繞太陽(yáng)運(yùn)轉(zhuǎn)，月球按照自身的軌道圍繞地球運(yùn)轉(zhuǎn)，形成潮汐，以及其他我們所觀察到的各種各樣的自然現(xiàn)象。萬(wàn)有引力是使物體獲得重量的因素。

反重力鑄造(Counter—Gravity Casting，CGC)是20世紀(jì)50年代發(fā)展起來(lái)的一種鑄件成形工藝．是帕斯卡原理在鑄造生產(chǎn)中的應(yīng)用。就其工藝而言，它是介于壓力鑄造和重力鑄造之間的一種液態(tài)成形方法。合金液充填鑄型的驅(qū)動(dòng)力與重力方向相反，合金液沿與重力相反方向流動(dòng)。與重力鑄造相比，反重力鑄造液態(tài)成形過(guò)程中熔體的流態(tài)可控，可以通過(guò)外力的作用來(lái)增強(qiáng)凝固補(bǔ)縮能力，因此，這種工藝方法可以做到液態(tài)充型平穩(wěn)，鑄件組織致密，鑄造缺陷能夠得到有效控制，是生產(chǎn)優(yōu)質(zhì)鑄件的優(yōu)選方法。

由于外加驅(qū)動(dòng)力的存在，使得CGC成為一種可控工藝，在金屬液充填過(guò)程中，通過(guò)控制外加力的大小可以實(shí)現(xiàn)不同充型速度的充填，滿足不同工藝的要求。同時(shí)，充填結(jié)束后可以繼續(xù)增加外力，使鑄件在一較大力的作用下凝固，提高金屬液的補(bǔ)縮能力，降低縮孔、氣孔和針孔等鑄造缺陷。近幾十年來(lái)，相繼出現(xiàn)了多種CGC方法，根據(jù)金屬液充填鑄型驅(qū)動(dòng)力的施加形式不同，CGC技術(shù)可以分為低壓鑄造、差壓鑄造、調(diào)壓鑄造等。

重力開(kāi)關(guān)是一個(gè)重力感應(yīng)的開(kāi)關(guān)，可以幫助用戶關(guān)閉重力感應(yīng)。安裝后添加小部件，添加后在桌面會(huì)有一個(gè)小開(kāi)關(guān)，需要關(guān)閉重力感應(yīng)的時(shí)候就OFF，開(kāi)啟就ON。

軟件信息

軟件名稱：重力開(kāi)關(guān)

軟件類型：系統(tǒng)工具

語(yǔ)言類型：英文

資 費(fèi)：完全免費(fèi)

開(kāi) 發(fā) 商：互聯(lián)網(wǎng)

系統(tǒng)要求： 安 卓