Physics and technology

Содержание и основные понятия

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Alterna · physics · 0.3
Physics and technology
The role of physics in technological development, great physics and its discovery.
A steam engine, a light bulb, a phone, a computer, a rocket -- all these inventions came about because physics discovered the laws of nature -- technology is a physics embedded in metal and silicon.
GEF · Grade 7
PIF · Baseline
01
Physics and its Impact on Technological Development
From wheel to quantum computer, physics moves progress.
How Physics Creates Technology
Each technical device is based on physical laws:
steam engine
Heat events, vapour pressure
Electric motor
Electromagnetic phenomena
Filament lamp
♪ current heating, light phenomena
Telephone
:: Sound and electrical phenomena
Computer
- Semiconductors, electricity
Missile
Reactive motion, thermodynamics
MRI
♪ Magnetic resonation, nuclear physics
Relationship of physics and technology
Physics and technology are evolving
Together.
The science of science reveals the laws of nature . . technology creates devices based on them . new devices allow new experiments . New experiments open new laws. This cycle lasts for millennia.
:: Physical developments
The Age
Opening
A scientist
~250 B.C.
The law of leverage that pushes out the force
Archimedes
~1600
Laws of falling bodies
Galileo
1687
Traffic laws, gravity laws
Newton
1660
The law of turgency
Hook.
1643
Atmospheric pressure, barometer
Torricelli.
1840
Law on Energy Conservation
Mayer, Joel.
1873
Electromagnetic theory
Hello.
1905
Relativity theory
Einstein
Physics and Society
The development of physics has changed human life: electricity, communications, transport, medicine, computers, but it also has responsibilities: nuclear weapons, environmental problems, physics is a tool, and its use depends on people.
02
Outcome of the introduction
What we learned
Key concepts
Physics
— Science of nature, studying phenomena and body properties
Physical body
— Subject matter;
substance
— what it is made of
Physical value
- the characteristic measured (length, mass, time...)
SI units
- meter, second, kilos, Kelvin, ampere
The Price of Separation
= (U
max
− U
min
) / n
Error
= C / 2; result: L = value ± Δ
Physics —
pilot
Science: hypotheses . experiences .
What's next?
Now that we know how to measure and test, let's go to the building of the substance. What is inside the objects? What are they made of? Why are some bodies solid and others liquid or gaseous?
C
What needs to be understood
Outcome 1
Explain the physical meaning of the topic "Physics and Technology" through a model, not just a formula.
Outcome 2
Discern and correctly use terms: physical law, model, technology.
Outcome 3
Indicate the conditions for the applicability of the law, verify units and limit cases.
T
Terms of the topic
The definition should indicate the physical meaning, not a substitute for a domestic synonym.
Physical law
Sustainable, experience-tested relationship between physical values or events under the conditions indicated.
model
Simplified representation of an object or process that retains essential properties to the task at hand.
technology
A practical way of applying scientific knowledge to achieve the intended result.
Measurement
Experimental comparison of the physical value with the accepted unit and the uncertainty of the result.
F
Origin and conclusion of the formulas
The fundamental law cannot be "proven" by algebras: for each record, it is stated whether it is a definition, an experimental law, or a model effect.
Qualitative theme
The main content of this topic is expressed by models, observations and causal relationships; the formula is not artificially added: quantitative laws are introduced on connected pages.
!
Model boundaries and typical errors
Error: Forget model condition
You can't put the formula on any situation just because it's a coincidence of letters.
How to Check the Mind
Then check the units, vector direction and the behaviour of the result at zero or very large parameter.
Σ
Conclusion on the topic
Physics and technology
A steam engine, a light bulb, a phone, a computer, a rocket -- all these inventions came about because physics discovered the laws of nature -- technology is a physics embedded in metal and silicon.
Coupling engine ∙ heat events, vapour pressure
Electric motor . Electromagnetic phenomena
Any numerical result shall be accompanied by a unit, a sign and an explanation of its physical meaning.
The content is consistent with the FRP on Physics of the OS/OSS 2025 and the subject matter of the current lines of the PNP: I. M. Peryškin and co-authors (7–9), G. J. Mäkishev and coauthors (10–11), and with the lines "Engineers of the Future" and V. A. Kasyanov. The original texts are not reproduced, the text of the textbooks is not reproduced.