粉筆的起源和發展

起源- 中世紀

粉筆最早的記錄是在中世紀時，人們開始發現用石灰加水，可以做成塊狀的物體，可以用類似木炭筆的方法，去記錄在深色或者是堅硬的表面。

使用優勢

當時粉筆的生產成本遠比紙張為低，而且沒有碳筆刻在木板岩石上，字跡模糊的問題。

材料的演變 (古代)

古代的粉筆通常使用天然的白堊製成，但隨著時間的推移，現代粉筆多用其他材料取代。

材料的演變 (現代)

傳統粉筆的主要成分是硫酸鈣（CaSO4），但由於其對健康的潛在危害，現今環保粉筆多採用碳酸鈣（CaCO3）作為原料，這種材料無毒且粉塵較少。

應用範圍 1

粉筆廣泛應用於黑板、地面和牆壁等書寫表面，並且在藝術創作中也被許多藝術家使用。

應用範圍 2

在台灣，警察取締違規停車、拖吊違停車輛後，也會用粉筆在地面上書寫車牌號碼、車輛保管場名稱及連絡電話，以便於車主前往繳納罰款取回車輛。

彩色粉筆

彩色粉筆為以上原料加上色料混合而成；部分廠商粉筆添加滑石粉或鈦白粉。

---

Origins and Development of Chalk

Origin - Medieval Times

The earliest records of chalk date back to medieval times when people discovered that by mixing lime with water, they could create a solid substance that could be used similarly to charcoal to write on dark or hard surfaces.

Advantages of Use

At that time, the production cost of chalk was significantly lower than that of paper, and it did not suffer from the blurriness issues associated with carbon pencils used on wood or stone.

Evolution of Materials (Ancient)

Ancient chalk was typically made from natural chalk, but over time, modern chalk has been largely replaced by other materials.

Evolution of Materials (Modern)

The primary component of traditional chalk is calcium sulfate (CaSO₄). However, due to its potential health hazards, environmentally friendly chalk today often uses calcium carbonate (CaCO₃) as a raw material, which is non-toxic and produces less dust.

Application 1

Chalk is widely used on writing surfaces such as blackboards, floors, and walls, and it is also utilized by many artists in their creative work.

Application 2

In Taiwan, police use chalk to write vehicle license plate numbers, impound lot names, and contact numbers on the ground after ticketing or towing illegally parked vehicles, making it easier for owners to pay fines and retrieve their vehicles.

Colored Chalk

Colored chalk is made by mixing the aforementioned materials with colorants; some manufacturers also add talcum powder or titanium dioxide to their chalk.