Graphs are a schematic representation in many fields.
A model of real objects.
Circles are vertices, lines are arcs of the graph (connections).
If there is a number next to the arc, it represents the distance between points on the map or the cost on a Gantt chart.
In electricity and electronics, vertices are components and modules, while lines are conductors.
In hydraulics, boilers, heaters, fittings, radiators, and pipes.
On the map, there are cities and roads.
From a school math problem:
A bus left point A for point B. The distance between the points is 30 km.
What if the distance is 0?
Reducing the distance from the roof ridge to the ground to zero turns a two-story house into a pit house.
Reducing the distance from the boiler to the radiator (shortening the pipe length) gives us a Russian stove.
As you might have guessed, the technology works both ways.
You can either reduce it to zero or increase it to infinity.
Reducing the length of electrical conductors led to the creation of microchips.
Length, height, and width are geometric measurements. Measurements of the real (visible) world.
Measurements can also be more abstract:
- Temperature
- Time
- Weight
- Density
- Thermal conductivity
- Electrical conductivity
- Strength
- Brittleness
- Speed
- Acceleration
- Energy
etc.
— the ability of material bodies to conduct energy (heat) from hotter parts of the body to cooler parts through the chaotic movement of particles (atoms, molecules, electrons, etc.).
How to reduce thermal conductivity to zero?
Correct.
Reduce the number of atoms, molecules, and electrons. In other words, create a vacuum.
Such technology already exists and is sold. It's called screen-vacuum thermal insulation. Panels with a thermal conductivity of 0.004-0.006 W/m·K.
For comparison, this is 10 times less than mineral wool and 50 times less than brick.
As a result, you can reduce the wall thickness by that much.
And if you reduce the mass to zero…
However, I won't deprive you of the joy of new discoveries.
Happy inventing!
Source: habr.com
