What does an inverted triangle mean?

Question 1: What does the inverted triangle in Feng Shui mean? In Feng Shui, "I like detours, but I don't want to go straight". If the triangle is inverted, that is, the big end faces the house, the impact force is smaller than the small angle. In geomantic omen, this kind of evil is called "triangle evil", which is difficult to resolve. Also known as "triangle demon" and "dark triangle demon". The harm of light is greater than the evil of darkness There will be accidents, blood, heart disease and nervous system diseases.

In the top triangle, feng shui is the golden word, and the owner may suffer from blood loss, and the marriage and family may be seriously hurt. The characteristic of the triangle is that it will give residents a mental and mental blow.

If the land you live in is triangular, you should turn it into an auspicious shape as soon as possible. As long as the ground is wide enough, it is not difficult to handle at all. For example, make the acute angle of the triangle into a fence, a tree wall, or plant a row of trees to partition it. Don't use this acute part of life.

The separated parts can be used as flower beds, or vegetable gardens, and even some shorter trees can be planted; In life, you can use the rectangular part of the land.

After such improvement, the disaster brought by the triangle can be avoided. If there is no extra space, you can separate the sharp edges and never use them. Once you live in a triangular land, it is absolutely necessary that the sharp corners should always be green (trees, shrubs and flowers). The separated sharp corners cannot be used as garages or warehouses. It must be regarded as an open space that has nothing to do with you and must not be used.

Question 2: What is the physical meaning of the inverted triangle symbol? Physical meaning?

To differentiate a vector, it is a vector.

U is expressed as the gradient of the vector u,

? U is expressed as the divergence of vector u.

X u is expressed as the curl of vector u.

If it is a square, that is, if it is a second-order partial derivative, it is expressed as a Hamiltonian operator.

Question 3: What does it mean to have a concession in the middle of the inverted triangle? It means "give way" warning sign, and secondary traffic must give way to primary (priority) traffic. If a traffic accident occurs at the intersection with this sign, the party who fails to make way according to this sign shall bear all or most of the responsibilities.

Question 4: What does it mean to add an F to an inverted triangle? Add an F-mark certification mark to the inverted triangle, indicating that the product is suitable for direct installation on the surface of ordinary combustible materials and is commonly used in lamps and other products (see article 3.2.9 of GB7000. 1 for details). As shown in the figure:

Question 5: A traffic sign: an inverted triangle. What does the word "let" mean? Slow down and make way.

Indicates that the vehicle should slow down and give way,

Note that the driver of the vehicle must slow down or stop, observe the driving situation on the main road,

On the premise of ensuring the priority of trunk highway vehicles, it is considered safe to continue driving.

Question 6: What does the inverted triangle symbol on the staff mean? It means that the pause sign, that is, an inverted small black triangle, should be short, light and elastic when playing or performing.

As shown in the figure:

Question 7: What does the inverted triangle mean in physics? Illustrate the vector differential operator with examples.