January 25

# Laser Laws Blog Post

In this project, we learned and experimentally proved the Pythagorean Theorem and the law of reflection.

Pythagorean theorem is a geometric theorem that states that the sum of the squares of the two sides of a right triangle is equal to the square of the hypotenuse.

The law of reflection states that when light strikes a mirror, it strikes at the same Angle as the reflected light.

Milestone 1: Project Start Mind Map

I create a mind map centered on “Laser” in MindNode. Added applications I know about lasers like the Laser cosmetic

Milestone 2: Law of Reflection Lab

My team and I used scientific methods to create an experiment to test the law of reflection.Β Materials: Ray box, protractor, mirror, paper, pencil.
My favorite part of this project was measuring the Angle of reflected light and incident light with the team

Question:Β

Is the law of reflection true for all angles of incidence

Hypothesis:

When light strike on mirror, the incident light is the same Angle as the reflected light

Procedure:

1) attach rubber feot to the mirror

2) plug in the ray-box

3) place the protractor on the paper against the mirror, mark with p pencil where the mirror and protractor are

4) point the incident ray at the mirror where the vertex of the protractor is

5) measure the angle of incidence and mark and label it on the paper

6) measure and label the angle of reflection

7) repeat steps 4-6 for 10 unique angles of incidence

Data/Results/Analysis:

Conclusion:

Accord to our group’s measurement, the Angle of each incident light and reflected light is mostly different.

This may be because the reflected light spread out after incident light hit the mirror, it make hard to measure accurately.

The law of reflection was true because our team measure carefully again and find that the Angle of incidence and the Angle of reflection were the same

Milestone 4: Laser Triangle DesignΒ

I designed a right triangle with a laser on a website and tested the reflection Theorem and The Pythagorean Theorem with it. This website: https://ricktu288.github.io/ray-optics/simulator_old/Β Β My favorite part of Milestone 4 was use laser and mirror to make the right triangles

Question:

How can we test the Pythagorean theorem and the law of reflection at the same time?

Hypothesis:

I predict the area of the square on theΒ  two sides adds up to the area of the hypotenuse square. I predict when a ray hit a mirror, the incident light is the same Angle as the reflected light.

Procedure:

First I made a mirror then I shot ray on the mirror, so the two sides of the triangle are done, and then I made a mirror on one side of the triangle, and adjusted the mirror to get a right triangle.

I will draw three squares on three sides of a right triangle.Β

I will measure the angle of the incoming light and the reflected light

Data/Results/Analysis: Β

Conclusion:

I made a right triangle with the rays and mirrors from this website, and after measure the length and angle with the ruler and protractor I found the Pythagorean theorem is true.

The sum of the squares of the two sides of a right triangle is equal to the hypotenuse squared. When a ray hits a mirror, it does arrive at the same Angle as the reflected light.

Milestone 5: Laser Display

The laser display that we built, Including a right triangle. My favorite part of Milestone 5 was saw that our group’s laser experiment successfully presented a right Angle star

Question:

How can we test the Pythagorean theorem and the law of reflection to represent a mathematical idea in a pictorial form?

Hypothesis:

I predict that the area of the two short squares will add up to the area of the hypotenuse square. When laser hits the mirror, the Angle of incident light and reflected light are the same.

Process:

1. Plan projects

2. Scheme design

3. Draw designs on cardboard

4. Measure the Angle and length of the design

7. Turn on the laser

9. Stick mirror and laser

Data/Results/Analysis:

Conclusion:

We made a star with ray and mirrors, after measured the length of the right triangle in the star with ruler and protractor, the sum of squares of both sides of the right triangle was equal to the square of the hypotenuse. The Pythagorean theorem is true.

and after measured the five angles of the ray with a ruler and protractor, I found that when the ray hit the mirror, the Angle of incident light and reflected light are the same.

The project end mind Map:

January 20

# Geek Out Blog: What kind of Painting Style are You?

His painting tools are always flat headed oil brushes or scraper tool

Big strokes style look simple and clean

Bright colors style

This style knows a lot about the colors and always very colorful. The ability to mix and colors is important. The images look intense and eye catching

Artist John Lori Morrisonβs work

Blue is the predominant color in his paintings

Warm colors harmonize the picture

Artist Gene Brownβs work

The clear color block, colorful color, strong impact. Using colors that I wouldn’t normally use

Large area flat paint style

This style of painting is composed of color blocks.

Works by artist Hung Haochang.

One painting, a few strokes. Color, composition and tone are all included

Horizontal line combination style

Horizontal composition is a kind of main composition, the horizontal line is about 2/3 of the picture, in the description of the sea, sky, grassland and other large space, showing a sense of space.

The light and shadow is main effect, give me a kind of clean feeling, The position of the light source is very important, the contrast is strong.

Paintings by Dutch artist Jan van der Kooi

Quiet, warm images

Crazy style

It seems to be messy, but actually it has the foundation of painting

abstract

abstract painting is crazier than crazy style . If you ask me what it is, I’ll tell you, “I don’t know.”

Picasso’s paintings, The Weeping Woman

Drawing and painting can depict people’s beautiful imagination and love for life

They are peaceful. You don’t have to worry when you’re painting

Art can make life interesting, you can decorating your home by yourself

There will be a group of friends who can draw together with you , each of them can be a teacher(People can learned from each other)

Can make aesthetic improvement

Makes people more determined, more confident

The best way to be friends with kids