Related Experiment Video
Updated: May 4, 2026
08:10
Building Langmuir Probes and Emissive Probes for Plasma Potential Measurements in Low Pressure, Low Temperature Plasmas
Published on: May 25, 2021
5.3K
Professor Jakub Karol Parnas: 140th birth anniversary
Jolanta Barańska1, Andrzej Dżugaj2, Adam Szewczyk1
1Instytut Biologii Doświadczalnej PAN im. M. Nenckiego, Warszawa.
Postepy Biochemii
|July 31, 2024
Summary
This article celebrates Jan Karol Parnas, a pioneering Polish biochemist, highlighting his 140th birth anniversary. It explores his foundational role in organizing Polish biochemistry and his lasting influence on scientific communities in Poland and Ukraine.
Area of Science:
- Biochemistry
- History of Science
- Biographical Studies
Background:
- Jan Karol Parnas (1883-1949) was a prominent Polish biochemist and scientist.
- His work significantly impacted the development of biochemistry in the first half of the 20th century.
- 2024 marks the 140th anniversary of his birth.
Observation:
- The article provides a synthetic biography of Professor Parnas.
- It details his crucial role in organizing scientific life in interwar Poland.
- It identifies his students and collaborators, forming the influential "School of Parnassus".
Findings:
- Parnas's legacy continues to shape the perspective of Polish biochemists.
- His influence extends to their views on scientific societies and international collaboration.
- Ukraine shares a significant scientific debt with Professor Parnas, comparable to Poland's.
Implications:
- The study underscores Parnas's enduring impact on biochemical thought and organization.
- It highlights the importance of recognizing historical figures in scientific development.
- It emphasizes the interconnectedness of scientific communities across national borders, particularly between Poland and Ukraine.
Related Concept Videos
01:12Carbon Skeletons
107.5K
Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side...
107.5K
00:37First Law of Thermodynamics
61.1K
The First Law of Thermodynamics states that energy cannot be created or destroyed, only transformed. This can be demonstrated within a classic food web where light energy from the sun is harnessed as radiant energy by plants, converted into chemical energy, and stored as complex carbohydrates. The vegetation is then consumed by animals and during the digestion process, the sugars release energy as heat. The sugars also produce chemical energy that either gets used up doing work, stored in...
61.1K
00:53Second Law of Thermodynamics
56.9K
The Second Law of Thermodynamics states that entropy, or the amount of disorder in a system, increases each time energy is transferred or transformed. Each energy transfer results in a certain amount of energy that is lost—usually in the form of heat—that increases the disorder of the surroundings. This can also be demonstrated in a classic food web. Herbivores harvest chemical energy from plants and release heat and carbon dioxide into the environment. Carnivores harvest the...
56.9K
01:04Pascal's Law
8.5K
In 1653, the French philosopher and scientist Blaise Pascal published "Treatise on the Equilibrium of Liquids," which discussed the principles of static fluids. A static fluid is a fluid that is not in motion. When a fluid is not flowing, we say that the fluid is in static equilibrium. If the fluid is water, we say it is in hydrostatic equilibrium. For a fluid in static equilibrium, the net force on any part of the fluid must be zero; otherwise, the fluid will start to flow. Pascal...
8.5K
01:22Gas Thermometers and the Kelvin Scale
4.5K
The definition of temperature in terms of molecular motion suggests that there should be a lowest possible temperature, where the average kinetic energy of molecules is zero (or the minimum allowed by quantum mechanics). Experiments confirm the existence of such a temperature, called absolute zero. An absolute temperature scale is one whose zero point is absolute zero. Such scales are convenient in science because several physical quantities, such as the volume of an ideal gas, are directly...
4.5K
01:16Centroid for the Paraboloid of Revolution
554
The paraboloid of revolution is an axially symmetric surface generated by rotating a parabola around its axis. This shape has several applications in mechanical engineering due to its advantageous structural properties, such as strength against stress concentration points and rotational symmetry.
The centroid for the paraboloid of revolution is the point where all the mass of the paraboloid is concentrated. This centroid is important for engineering applications, as it determines how forces are...
The centroid for the paraboloid of revolution is the point where all the mass of the paraboloid is concentrated. This centroid is important for engineering applications, as it determines how forces are...
554