Thông tin liên hệ
Bài viết của Trần Bảo Ngọc

The Wave Aspect of Light: Interference

We know that visible light is the type of electromagnetic wave to which our eyes respond. Like all other electromagnetic waves, it obeys the equation ...

Tác giả: Trần Bảo Ngọc viết 15:30 ngày 25/05/2018 chỉnh sửa

Glossary of Key Symbols and Notation

In this glossary, key symbols and notation are briefly defined. Symbol Definition any symbol ...

Tác giả: Trần Bảo Ngọc viết 15:30 ngày 25/05/2018 chỉnh sửa

Magnetic Field Strength: Force on a Moving Charge in a Magnetic Field

What is the mechanism by which one magnet exerts a force on another? The answer is related to the fact that all magnetism is caused by current, the flow of charge. Magnetic fields exert forces on moving charges , and so they exert forces on other magnets, ...

Tác giả: Trần Bảo Ngọc viết 15:30 ngày 25/05/2018 chỉnh sửa

Pop Culture, Subculture, and Cultural Change

It may seem obvious that there are a multitude of cultural differences between societies in the world. After all, we can easily see that people vary from one society to the next. It’s natural that a young woman from rural Kenya would have a ...

Tác giả: Trần Bảo Ngọc viết 15:30 ngày 25/05/2018 chỉnh sửa

Global Wealth and Poverty

How poor is poor for these beggar children in Vietnam? (Photo courtesy of Augapfel/flickr) What does it mean to be poor? Does it mean being a single mother with two kids in New York City, ...

Tác giả: Trần Bảo Ngọc viết 15:29 ngày 25/05/2018 chỉnh sửa

The Human Population

Concepts of animal population dynamics can be applied to human population growth. Humans are not unique in their ability to alter their environment. For example, beaver dams alter the stream environment where they are built. Humans, however, have the ability to ...

Tác giả: Trần Bảo Ngọc viết 15:29 ngày 25/05/2018 chỉnh sửa

Connections to Other Metabolic Pathways

You have learned about the catabolism of glucose, which provides energy to living cells. But living things consume more than just glucose for food. How does a turkey sandwich, which contains protein, provide energy to your cells? This happens because all of the ...

Tác giả: Trần Bảo Ngọc viết 15:29 ngày 25/05/2018 chỉnh sửa

Single Slit Diffraction

Light passing through a single slit forms a diffraction pattern somewhat different from those formed by double slits or diffraction gratings. [link] shows a single slit diffraction pattern. Note that the central maximum is larger than those on either side, ...

Tác giả: Trần Bảo Ngọc viết 15:29 ngày 25/05/2018 chỉnh sửa

Hormonal Control of Human Reproduction

The human male and female reproductive cycles are controlled by the interaction of hormones from the hypothalamus and anterior pituitary with hormones from reproductive tissues and organs. In both sexes, the hypothalamus monitors and causes the release of ...

Tác giả: Trần Bảo Ngọc viết 15:29 ngày 25/05/2018 chỉnh sửa

Types of Hormones

Maintaining homeostasis within the body requires the coordination of many different systems and organs. Communication between neighboring cells, and between cells and tissues in distant parts of the body, occurs through the release of chemicals called hormones. ...

Tác giả: Trần Bảo Ngọc viết 15:29 ngày 25/05/2018 chỉnh sửa