How does it work? - Ballpoint pen

How does it work? - Ballpoint pen

The invention of the ballpoint pen made writing a lot easier.

Công nghệ

Từ khoá

bút bi, viết, dụng cụ viết, Thẩm phán László, bút chì, bút máy, lọ mực, hộp đạn, mực, Công nghệ

Các mục liên quan

Các cảnh

Các mục liên quan

Gutenberg's press (Mainz, 15th century)

Life magazine picked Gutenberg's invention of mechanical movable type printing as the most important event of the second millennium.

How does it work? – Cinema projector

This animation demonstrates the design and operation of a traditional cinema projector.

How does it work? - CRT television

This animation demonstrates how a CRT television works.

How does it work? - Laser printer

The animation demonstrates how laser printers work

How does it work? - Record player

This animation demonstrates the mechanism and operation of record players.

Papermaking

Paper was invented more than two thousand years ago.

Graphite

One of the crystalline allotropes of elemental carbon.

Public school in Central Europe (early 20th century)

Public schools in villages played an important role in education.

Added to your cart.