7 best plastics chemical engineering

Product features

Relativity

From the age of Galileo until the early years of the 20th century, scientists grappled with seemingly insurmountable paradoxes inherent in the theories of classical physics. With the publication of Albert Einstein's "special" and "general" theories of relativity, however, traditional approaches to solving the riddles of space and time crumbled. In their place stood a radically new view of the physical world, providing answers to many of the unsolved mysteries of pre-Einsteinian physics.

"Special" and "General"

He explains both theories in their simplest and most intelligible form for the layman not versed in the mathematical foundations of theoretical physics.

Einstein's Theory of Relativity

A book in which one great mind explains the work of another great mind in terms comprehensible to the layman is a significant achievement. This is such a book. Max Born is a Nobel Laureate (1955) and one of the world's great physicists: in this book he analyzes and interprets the theory of Einsteinian relativity. The result is undoubtedly the most lucid and insightful of all the books that have been written to explain the revolutionary theory that marked the end of the classical and the beginning of the modern era of physics.

Relativity Simply Explained

Since the publication of Einstein's Special Theory of Relativity in 1905, the discovery of such astronomical phenomena as quasars, pulsars, and black holes — all intimately connected to relativity — has provoked a tremendous upsurge of interest in the subject. This volume, a revised version of Martin Gardner's earlier Relativity for the Million, brings this fascinating topic up to date. Witty, perceptive, and easily accessible to the general reader, it is one of the clearest and most entertaining introductions to relativity ever written.

Sidelights on Relativity

In 1905, a German technical journal, Annalen der Physik, published a remarkable paper by a young clerk in the patent office at Berne, Switzerland. The clerk was Albert Einstein. The paper outlined his Special Theory of Relativity, a revolutionary physical theory which discarded the concept of absolute motion in favor of relative motion in the context of a four-dimensional continuum of space-time. It proved to be the most profound revolution in physics since Newton.

Product description

Laboratory Assistant Linear Pipettor Rack Hold Up 6 Pipettors with Safe, Convenient and Efficient

• PIPETTOR STAND RACK: Keep the table clean, organized, orderly and let tester work safely, conveniently, efficiently with holding up 6 universal single channel or multi-channel pipettors.
• STABLE SUPPORT: The pipettor holder adopts a lock buckle design and double triangle rack support structure, which is more stable than the Z-shaped and L-shaped liquid shifter frame.
• COMPATIBILITY: Apply to most major pipette brands. For example: for Thermo, TopPette, Scilogex, Microlit, Gilson.
• PREMIUM MATERIALS AND DESIGN: The products are molded by high-density engineering plastics, with nice acid and alkali resistance. Pipetting Device Bracket Can be hung on both sides to avoid cross contamination.
• OUR GUARANTEE: If you’re not in love with it for whatever reason, we’ll give you a full replacement or refund—no questions asked. If you have any doubt, please tell us. With nothing to worry about, or even to share with your friends, try it now.

Product features

Introduction to the Theory of Relativity

One of the most important theories in modern physics, readers need search no further than this lucid undergraduate-level text. Replete with examples that make it especially suitable for self-study, the book assumes only a knowledge of algebra. Topics include classical relativity and the relativity postulate, time dilation, the twin paradox, momentum and energy, particles of zero mass, electric and magnetic fields and forces, and more.

Einstein's Theory of Relativity

A book in which one great mind explains the work of another great mind in terms comprehensible to the layman is a significant achievement. This is such a book. Max Born is a Nobel Laureate (1955) and one of the world's great physicists: in this book he analyzes and interprets the theory of Einsteinian relativity. The result is undoubtedly the most lucid and insightful of all the books that have been written to explain the revolutionary theory that marked the end of the classical and the beginning of the modern era of physics. (0486607690)

Relativity Simply Explained

Since the publication of Einstein's Special Theory of Relativity in 1905, the discovery of such astronomical phenomena as quasars, pulsars, and black holes — all intimately connected to relativity — has provoked a tremendous upsurge of interest in the subject. This volume, a revised version of Martin Gardner's earlier Relativity for the Million, brings this fascinating topic up to date. Witty, perceptive, and easily accessible to the general reader, it is one of the clearest and most entertaining introductions to relativity ever written. (0486293157)

Sidelights on Relativity

In 1905, a German technical journal, Annalen der Physik, published a remarkable paper by a young clerk in the patent office at Berne, Switzerland. The clerk was Albert Einstein. The paper outlined his Special Theory of Relativity, a revolutionary physical theory which discarded the concept of absolute motion in favor of relative motion in the context of a four-dimensional continuum of space-time. It proved to be the most profound revolution in physics since Newton. (048624511X)

Product description

Feature:

1. Micro‑peristaltic pump, adopts high‑quality engineering plastics, durable, wear‑resistant and not easily damaged.

2. Using mute design, no noise when working, simple operation method and long service life.

3. Built‑in double ball bearings, self‑priming, anti‑backflow, stable performance and good sealing.

4. Flow direction of pump depends on connection mode of positive and negative stages of power supply, terminal can choose positive and negative stages at will.

5. Suitable for experiments, biochemical analysis, pharmaceuticals, fine chemicals, bioengineering, food, paper making, water treatment, etc.

Spec:

Condition: 100% Brand New

Item Type: Peristaltic Pump

Material: Engineering Plastics

Weight: Approx. 80g / 2.8oz

Motor Size: Approx. 33x32mm / 1.3x1.26in

Pump Head Size: Approx. 53x23mm / 2.1x0.9in

Center Distance Of Mounting Hole: 46mm / 1.8in

Equipped Pump Tube (IDxOD): Inner Diameter: 2.2mm / 0.1in, Outer Diameter: 4.5mm / 0.2in

Applicable Power Supply: DC 6V

No-Load Current: ≤350mA

Lift: ≥5m

Suction Range: ≥5m

Working Environment: Temperature 0-40℃, Relative Humidity <80%

Flow Rate: 100ml/Min

Pump Tube Life: >300 Hours (Working for 10 seconds and stop for 10 seconds)

Motor Life: >800 Hours (Working for 10 seconds and stop for 10 seconds)

Application: Experiments, biochemical analysis, pharmaceuticals, fine chemicals, bioengineering, pharmaceutical fillers, food, paper-making, ceramics, water treatment, environmental protection, powder and other fields

Package List:

1 x Peristaltic Pump

Note:

1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.

2. Monitors 

• Flow direction of pump depends on connection mode of positive and negative stages of power supply, terminal can choose positive and negative stages at will.
• Micro‑peristaltic pump, adopts high‑quality engineering plastics, durable, wear‑resistant and not easily damaged.
• Suitable for experiments, biochemical analysis, pharmaceuticals, fine chemicals, bioengineering, food, paper making, water treatment, etc.
• Using mute design, no noise when working, simple operation method and long service life.
• Built‑in double ball bearings, self‑priming, anti‑backflow, stable performance and good sealing.

Product description

The rate of transparency allows to see the drawing medium below template for easy positioning.Ideal for chemistry students, teachers, chemical engineers.

• School Chemistry Laboratory Equipment Symbols Drawing Template Stencil.
• Dimensions: 210 x 142mm, Thickness: 1.3mm.
• Made from transparent clear plastic.
• Precision milled.
• Ideal for chemistry students, teachers, chemical engineers.