A smartphone or smart phone

A smartphone or "smart phone" is a mobile phone that combines features of a personal computer with advanced functionality that can be extended through application programs run by its operating system

The first smartphone was released in 1994 by IBM and was named SIMON. It wasn't as smart as today's, but it already had: time zone, agenda, calendar, email, and world time, in addition to a 1MG memory card to store data.

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Those who liked A smartphone or smart phone, also liked to explore ACADEMIC

Explore more about A first-degree equation is a polynomial equation in which the highest exponent of the variable is 1.

General form:
It is written as:
$ ax + b = 0 $
Where:
a and b → are known numbers (constants).
x → is the unknown variable.

What is the solution?
The solution is the value of x that makes the equation true.

How to solve (step by step):
1️⃣ Isolate the term with x:
Put the term with x alone on one side.
Move the other terms to the other side.

2️⃣ Simplify the equation:
Perform operations on both sides.
Add or subtract values.

3️⃣ Isolate the variable:
Divide both sides by the coefficient of x.
Leave x alone.

4️⃣ Find the solution:
The value obtained for x is the solution of the equation.
It makes the equality true.

Example of General Form:
Equation: $ ax + b = 0 $
Goal: find x.

Simple summary:
First-degree equation: $ ax + b = 0 $
Steps:
isolate x.
simplify.
divide.
solve.

Special case:
Usually there is one unique solution.
If any value of x works, it is an identity...

A first-degree equation is a polynomial equation in which the highest exponent of the variable is 1.
General form:
It is written as:
$ ax + b = 0 $
Where:
a and b → are known numbers (constants).
x → is the unknown variable.
What is the solution?
The solution is the value of x that makes the equation true.
How to solve (step by step):
1️⃣..know more

Ancient Greece was one of the - About ACADEMIC

Explore more about Ancient Greece was one of the most important civilizations in history and developed in a strategic region of the Mediterranean Sea.

Geographical location:
Greece is located on the Balkan Peninsula.
It is surrounded by the Mediterranean Sea.
It has many islands, mainly in the Aegean Sea.
👉 This location favored trade and navigation.

Origin of Greek civilization:
Greek civilization emerged around the 8th century BC.
It originated in three main areas:
Mainland Greece.
Islands of the Aegean Sea.
Coasts of Asia Minor.

Expansion of Ancient Greece:
Over time, the Greeks spread throughout the Mediterranean.

They created colonies in several regions, which helped to:
expand trade.
strengthen the economy.
spread Greek culture.

Importance of colonies:
Colonies were not just territories:
they maintained ties with mainland Greece.
they exchanged goods and ideas.
they helped spread Greek culture and language...

Ancient Greece was one of the most important civilizations in history and developed in a strategic region of the Mediterranean Sea.
Geographical location:
Greece is located on the Balkan Peninsula.
It is surrounded by the Mediterranean Sea.
It has many islands, mainly in the Aegean Sea.
👉 This location favored trade and navigation.
Origin of Greek civilization:
Greek..know more

Astrology is a very ancient pr - About ASTROLOGY

Explore more about Astrology is a very ancient practice that emerged thousands of years ago and had a major influence on many cultures throughout history.

Historical origin:
Records of astrology date back to the 3rd millennium BC.
It was very important in ancient civilizations.
It influenced the development of astronomy and other fields of knowledge.

Astrology and astronomy:
Until the Modern Age, astrology and astronomy were not separated.
Both were studied as part of the same body of knowledge.
With the advancement of science, they gradually separated:
Astronomy → science of celestial bodies.
Astrology → symbolic interpretation of celestial bodies.

What does astrology claim?
Astrologers claim that celestial bodies influence life on Earth.
This influence is said to be linked to human personality and events.

What does science say?
Strict scientific studies have found no evidence of this influence.
Statistical tests show insignificant results.
Therefore, astrology is classified as a pseudoscience.

Forer Effect (explaining its popularity):
Many astrological descriptions are generic and vague.
They can seem true for almost anyone.
This phenomenon is called the Forer Effect.
👉 when people believe general statements are personally accurate...

Astrology is a very ancient practice that emerged thousands of years ago and had a major influence on many cultures throughout history.
Historical origin:
Records of astrology date back to the 3rd millennium BC.
It was very important in ancient civilizations.
It influenced the development of astronomy and other fields of knowledge.
Astrology and astronomy:
Until..know more

Molar mass is a physical prope - About ACADEMIC

Explore more about Molar mass is a physical property that indicates the mass of a substance at the molecular level.

Basic definition:
It represents the mass of 1 mole of a substance.
It is calculated by adding the atomic masses of all atoms in a chemical formula.

Unit of measurement:
👉 g/mol (grams per mole).
This means:
how many grams are present in 1 mole of a substance.

Simple example:
If a substance has a molar mass of:
👉 32 g/mol.
✔️ It means:
1 mole of that substance = 32 grams.

How to calculate molar mass:
1️⃣ Identify the chemical formula:
Check how many atoms of each element are present.

2️⃣ Consult the periodic table:
Find the atomic mass of each element.
Each element has an average value in g/mol.

3️⃣ Multiply and add:
Multiply the atomic mass by the number of atoms.
Add all the results.

What is atomic mass?
It is the value found in the periodic table.
It represents the average mass of an element’s isotopes.
It is used as the basis for calculating molar mass.

Simple summary:
Molar mass = mass of 1 mole of a substance.
Unit: g/mol.
Calculated by adding the atomic masses of the elements.
The periodic table is used as reference...

Molar mass is a physical property that indicates the mass of a substance at the molecular level.
Basic definition:
It represents the mass of 1 mole of a substance.
It is calculated by adding the atomic masses of all atoms in a chemical formula.
Unit of measurement:
👉 g/mol (grams per mole).
This means:
how many grams are present in 1 mole of a substance.
Simple..know more

There are several ways to inve - About ACADEMIC
There are several ways to investigate and understand the mysteries of history. For this, historians use different types of evidence left behind by ancient societies.
Who are historians?
They are specialists who study the past.
They analyze documents and historical traces.
They seek to understand how societies lived and evolved.
What do historians use?
They..know more

Rocks and minerals are fundame - About ACADEMIC
Rocks and minerals are fundamental elements of the Earth and form the basis of geology. Although they are closely related, they are not the same thing. What are rocks?
Rocks are natural formations.
They are composed of one or more minerals.
They form through geological processes (such as pressure, temperature, and magma solidification).
They have a cohesive structure, meaning..know more

A quadratic equation (or secon - About ACADEMIC
$Explore more about A quadratic equation (or second-degree equation) is a polynomial equation in which the highest exponent of the variable is 2. General form: It is written as: $ ax^2 + bx + c = 0 $ Where: a, b, c → are constant numbers (with $ a \neq 0 $). x → is the unknown variable. How to find the solutions? First, we calculate the discriminant (Δ): $ \Delta = b^2 - 4ac $ It determines how many solutions the equation has. Types of solutions: 1. Two real and different roots: When: $ \Delta > 0 $ ✔️ The equation has two distinct real solutions. ✔️ The x values are different. 2. Two equal real roots: When: $ \Delta = 0 $ ✔️ The equation has one repeated solution. ✔️ Both roots are equal. 3. No real roots: When: $ \Delta ❌ There are no real solutions. ✔️ The solutions are complex numbers. Simple summary: Second-degree equation: \( ax^2 + bx + c = 0 $. Discriminant: $ \Delta = b^2 - 4ac $. Types of solutions: $ \Delta > 0 $ → 2 different roots. $ \Delta = 0 $ → 1 double root. $ \Delta < 0 $ → no real roots...$
A quadratic equation (or second-degree equation) is a polynomial equation in which the highest exponent of the variable is 2.
General form:
It is written as:
$ ax^2 + bx + c = 0 $
Where:
a, b, c → are constant numbers (with $ a \neq 0 $).
x → is the unknown variable.
How to find the solutions?
First, we calculate the discriminant (Δ):
\(..know more

Transitional fossils are a ser - About ACADEMIC
Transitional fossils are a series of finds that help in understanding the evolution of certain animals. For example, bird fossils show how a group of dinosaurs gradually acquired features such as hollow bones and feathers. Turtles are an example of an animal whose origin is enigmatic, but which can be understood by transitional fossils. The ancestor of turtles had broad ribs but lacked the shell that..know more

Astrology is an ancient practi - About ASTROLOGY
Astrology is an ancient practice that was once linked to astronomy, but today it is considered a pseudoscience because it lacks scientific evidence.
What does this mean?
Astrology does not follow the scientific method.
There is no reliable evidence linking horoscopes to real-life events.
Lack of scientific evidence
Studies show that:
there is no statistical..know more

Chemical radioactivity is a ph - About ACADEMIC
Chemical radioactivity is a phenomenon in which unstable atoms emit subatomic particles or electromagnetic radiation to achieve greater nuclear stability. There are three main types of radiation: alpha particles, beta particles and gamma radiation.Alpha (α) particles: These are helium nuclei composed of two protons and two neutrons. They have a positive charge and limited penetration. Beta particles..know more

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