97 is a prime number so the only factors are 1 and 97.
The factors of 98
1,2,7,14,49,98
In pairs
1,98
2,49
7,14
Prime Factorization 98
2,7,7
Factors of 97 and 98-Includes Prime Factorization
Saturday, February 15, 2020
97 is a prime number so the only factors are 1 and 97.
The factors of 98
1,2,7,14,49,98
In pairs
1,98
2,49
7,14
Prime Factorization 98
2,7,7
White Blood Cells T-cells and B-cells ( Cells of the immune system )
White blood cells and the cells of the immune system.
How does your immune system fight disease?
The skin is an amazing line of defense against pathogens.
If this protective barrier is broken then your next lines of defense springs into action.
The first part of the immune system that meets invaders like bacteria is a group of proteins called the complement system. The complement system consists of a number of small proteins found in the blood.
When the complement system detects a pathogen, signals are sent out to the phagocytes.
This is a group of immune cells specialized in finding and "eating" bacteria, viruses, and dead or injured body cells. The macrophages respond to invaders and start to engulf or destroy the pathogens in several different ways. Macrophages also play a key part in alerting the rest of the immune system of invaders.
There are two main types of lymphocytes, the T cells, and the B cells
T cells come in two different types
They are named T cells after the thymus, an organ situated under the breastbone. T cells are produced in the bone marrow and later move to the thymus where they mature.
Helper T cells are the major driving force and the main regulators of the immune defense. Their primary task is to activate B cells and other T cells. The T cell is specialized in attacking cells of the body infected by viruses and sometimes also by bacteria.
The B Cells become activated after receiving proteins from helper t cells.B-cells produce antibodies. When attached, the antibodies serve as an appetizing coating for eater cells such as the macrophage. Antibodies also neutralize toxins and prevent viruses from infecting new cells.
The Memory Cells are the second cell type produced by B cells. The memory cells help remember the pathogens which help fight the pathogen the next time the body is invaded.
Factors of 111 and 112
All factors of the composite numbers 111 and 112
Factors of 111
1,3,37,111
In pairs
1,111
3,37
Prime Factorization of 111
3 37
Factors of 112
1,2,4,7,8,14,16,28,56,112
In paits
1,112
2,56
4,28
7,16
8,14
Prime factorization 112
2 2 2 2 7
2^4 * 7^1
Factors of 113 and 114
All factors of the prime number 113 and the composite number 114
113 is a prime number and 1 and 113 are the only factors of 113
Factors of 114
1,2,3,6,19,38,57,114
In pairs
1,114
2,57
3,38
6,19
Prime factorization of 114 2,3,19
How does the human eye work?
Wednesday, February 12, 2020
How do your eyes convert light into an image that you can see?
Your eyes allow you to see the world around you, in fact, your eyes allow you to watch this video above, but how do your eyes transfer the light energy into impulses that your brain can interpret?
When rays of light bounce off an object like a dog, they first strike your eyes and pass through a structure known as the cornea.
The cornea is a clear membrane, like a window, and covers the front of the eye.
When light passes through the cornea it then passes through a fluid-filled chamber and reaches
the pupil. The pupil is an opening through which light enters the eye.
In bright light the pupil is small and in dark light, the pupil opens and is larger.
This is a result of the iris. The iris is a ring of muscle that surrounds the
pupil and regulates the amount of light entering the eye.
The iris also gives the eye its color based on the amount of pigment it contains.
When light passes through the pupil it will strike the lens, which is convex in shape.
A convex lens is thicker in the middle compared to the edges.
Because of the way the lens of the eyes bends the light the image it produces is upside
down and reversed. Muscles that are attached to the lens adjusts its shape which allows the light to be clear and in focus.
After passing through the lens the light passes through a jelly-like fluid and reaches the back of the eye onto a surface called the retina. The retina covers the back of your eye
and is filled with tiny receptors called rods and cones.
There are over a hundred and thirty million receptor cells. There are two types of receptors, rods, and cones. Rod's work best in dim light and allow you to see black and white.
Cones on the other hand cones work better in bright light and enable you to see colors. There are three types of cones, red, green, and blue which allows you to see colors around you.
After the light strikes the rods and cones nerve impulses travel down the optic nerve to the occipital lobe of your brain. At the occipital lobe, the reversed image is turned right-side-up and also combines the images from each eye to make one image.
Concave Convex Lenses
Sunday, February 9, 2020
What is the difference between a convex and a concave lens?
Lenses are used in glasses, telescopes, microscopes, flashlights, and many more helpful objects.
A convex lens is a lens that is thick at the center compared to the edges. Convex lenses are also called converging lenses because as the light passes through the lens the rays come together at a focal point.
As the light passes through the lense it bends the light towards the center.
A convex lens is called a positive lense because the location of the focal point is in front of the lens.
A convex lens has the ability to magnify things and make them look bigger.
The human eye uses a convex lens to focus light and a convex lens can be used to correct long-sightedness or hypermetropia.
A convex lens is also used in a microscope and telescopes.
A concave lens is thicker at edges compared to the middle.
You can remember a concave lens because you are going into a cave.
It is also called a diverging lens because as the light passes through the lense they separate from one another.
As the light passes through a concave lens the light is bent outward from one another.
A concave lens is called a negative lense because the focal point is behind the lens.
It is used to correct short-sightedness or myopia.
Concave lenses are used in flashlights to spread out the light.
Binoculars and telescopes use convex lenses to magnify objects and make them appear closer, but the image may be blurry. Binocular and telescope manufacturers use concave lenses in the eyepieces to help focus images more clearly.
Door viewers or peepholes use concave lenses in order to have a wide view of the area.
Summary Chart of Convex and Concave Lenses
Convex
|
Concave
| |
Structure
|
Thicker at the center compared to the edges
|
Thinner in the middle compared to the edges
|
Alternate
Name
|
Converging Lens
Positive Lens
|
Diverging lens
Negative lens
|
Light Rays
|
Bend towards the center
|
Bend away towards the outside
|
Use
|
Our eyes, correct long-sightedness, hypermetropia,
telescope, microscope
|
Correct nearsightedness,
myopia
|
Focal Point
|
Positive focal point
|
Negative focal point
|
Is weight and mass the same?
Friday, February 7, 2020
Doesn’t mass and weight measure the same thing?
Not really
Mass is a measurement of the amount of matter something contains, while Weight is a force of the gravitational attraction the object feels towards another object like the Earth’s center
Mass is measured by using a balance comparing a known amount of matter to an unknown amount of matter. Weight is measured on a scale. The Mass of an object doesn't change when an object's location changes.
Weight, on the other hand, does change with location.
The mass of an object is a measure of the number of atoms in it.
The SI unit for mass is the kilogram.
The kilogram was originally defined in 1795 as the mass of one liter of water.
If you use the imperial system the unit is a slug which has a mass of 32.1740 lb
So if you weigh 161 pounds your mass is 5 slugs.
Weight is a measure of the force that gravity is pulling on an object.
Gravity is a force and therefore weight technically should be measured in newtons. A newton N is equal to an acceleration of one kilogram one meter per second squared
For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth
But here is where it may get confusing. There are other units that are used to describe weight that sound like mass.
The imperial system may use pounds to measure weight which is defined in terms of the kilogram as being exactly 0.45359237 kilograms.
Your weight can change based on the gravitational pull.
You weigh varies on the moon and other planets but your mass remains the same
If a cube has a mass of 90.91 kilograms and a weight of 200 pounds on Earth
It will weigh 33 pounds on the moon but still have a mass of 90.91 kilograms
On Mars, the cube would weigh 76 pounds but still have a mass of 90.91 kilograms
On Jupiter, the cube weighs 468 pounds and have a mass of 90.91 kilograms
So in conclusion,
Mass is a measure of how much matter something contains, which equals the number of atoms in it.
Weight is a measure of how strongly gravity pulls on something
The SI unit for mass is kilograms
The SI unit for weight is the newton N.
For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon.
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