What is science? by University of Groningen

Glass retort with brass stopcock tap, 1810

2017-10-31 18:19:22 UTC

Astrolab (deconstructed)

2017-10-31 18:26:07 UTC

Science is all about control

2017-11-07 12:25:27 UTC

The large hadron collider (well, a part of it at least). Think of the number of variables that need to be controlled to run this piece of lab equipment! Also see the human for a sense of scale.

Image copyright CERN:

Photo 51

2017-11-07 13:47:01 UTC

Rosalind Franklin's X-ray diffraction photo contributed to the understanding of the structure of DNA. Part of a frieze at King's College London.

2017-11-07 13:54:40 UTC

1913 Watson Fram microscope, which originally cost £12 10s as a complete outfit with extra eyepieces, objectives and a very fine mahogany box..

Controlled experiments

2017-11-07 16:06:43 UTC

Captain Cook investigating the transit of Venus. Here you have some sense of the connection between imperialism and European science

2017-11-07 16:35:59 UTC

2017-11-07 17:30:09 UTC

The voltaic pile, created by Italian scientist Alessandro Volta in 1800. This was an early battery which used alternating "piles" of copper and zinc, with brine soaked paper between them, to create a current.

Tycho Brahe's cross staff

2017-11-07 19:58:30 UTC

It may look crude, heavy and clumsy, but with it Tycho Brahe made the most accurate naked-eye observations ever of stars and the planets, and thousands of them. His data enabled Kepler to discover the laws that bear his name, and finally define the orbits of the planets as ellipses.

Electron Microscope

2017-11-08 09:56:24 UTC

I used it for testing pottery in archaeology.
Photo by Dave Pape, 2009. Creative Commons License.

Computers in early 1980s

suecrawford — 2017-11-08 12:56:44 UTC

I am not a sicentist but this was one of the first computers I worked with - the Northstar Advantage

School science lessons

suecrawford — 2017-11-08 12:59:55 UTC

Test tubes, Bunsen burners and irate science teachers ...

Dreams of landing on the moon

suecrawford — 2017-11-08 13:02:37 UTC

The Apollo space missions and the moon landing

This is a picture of me doing my PhD in the early 70s. Nothing iconic, just one of the infinitely many different activities that make up 'science'. I'm testing a glass vacuum line (used for volatile air-sensitive compunds) for leaks, using a Tesla coil. Safety glasses, but no lab coat...

2017-11-09 20:08:47 UTC

I couldn't resist

2017-11-09 21:15:19 UTC

2017-11-09 21:17:13 UTC

Hubble's eXtreme Deep Field

Hubble Space Telescope

2017-11-10 18:52:20 UTC

Expensive science!

Hospital biochemistry lab

witherspaula — 2017-11-10 19:40:23 UTC

The machines in the background are automated chemistry analysers- glorified spectrophotometers! Used for diagnostic and research purposes.

Isaac Newton, whose universal theory influenced not only science, but also the social sciences, and Enlightenment religion.

2017-11-10 22:47:00 UTC

Instruments provide an unbiased (?) view of the Universe

tallstarman — 2017-11-11 10:12:00 UTC

I was recently interviewed by Jingkids magazine (Beijing). They took this photo to underscore that we use instrumentation instead of our eyes to record our observations

Lab animals

2017-11-11 15:26:09 UTC

Not very proud of what we have donde to animals but without them much of what we know today wouldn't have been possible. Science today though is limited as to experimenting openly with humans.

Paleontology

2017-11-12 01:20:20 UTC

My daughter's new display at the Utah Museum of Natural History

sir

2017-11-12 13:04:33 UTC

sir john dalto who sad6 postulates of an atom scientifically for the first time ever.

2017-11-12 13:04:34 UTC

there were many who talked about even Aristotle , Democritus (who named a atom

Faraday at the Royal Institution in London

2017-11-12 14:33:20 UTC

scientific microscope

2017-11-12 14:53:02 UTC

Curiosity

2017-11-12 17:31:24 UTC

Earth Rise (Bill Anders: Apollo 8: 1968). A Reflection of Human Curiosity of Nature.

Joseph Wright of Derby (The Orrery) (1766)

2017-11-12 19:40:24 UTC

The magnificence of Science in understanding the world.

Joseph Wright of Derby (1768) (The Bell-Jar Experiment)

2017-11-12 19:41:59 UTC

Experimentation, based on Boyle/Hooke's air-pump studies, to show the importance of air to living things.

The Establishment of the Royal Society

kippercob — 2017-11-13 04:17:20 UTC

X-ray crystallography of DNA, from Rosalind Franklins notebook.

2017-11-13 20:33:19 UTC

2017-11-13 21:16:03 UTC

it is first computer.

Nicole Oresme (1325-1382)

2017-11-15 23:27:29 UTC

Among other important discoveries, developed the mathematical theorem "latitudo uniformiter difformis" = the law of space traversed in case of uniformly varied motion. Published two centuries before Gallieo took credit for the idea

Science is:

2017-11-16 06:05:47 UTC

I think it is to vast/important for one picture, so I found this amusing poster that has some of the elements (who can forget dissecting frogs):

(borrowed from zazzle.com)

2017-11-16 19:54:13 UTC

I chose Darwin, as went against centuries of accepted theory develop a new explanation that better fit the massive collection of observable facts.

Beyond the surface

2017-11-18 09:42:45 UTC

I chose The Anatomy Lesson of Dr. Nicolaes Tulp (1632) by Rembrandt as a symbol of the scientific aim to go literally beyond the surface.

Bertini fresco of Galileo Galilei and Doge of Venice

Prevignano — 2017-11-18 10:33:18 UTC

1609: Galileo showing how to use the telescope to Venetian authorities.

2017-11-20 17:47:12 UTC

Microwave image of the sky

2017-11-23 08:05:25 UTC

The detailed, all-sky picture of the infant universe created from nine years of WMAP data. The image reveals 13.77 billion year old temperature fluctuations (shown as color differences) that correspond to the seeds that grew to become the galaxies.

Peter Hall

2017-11-23 21:55:49 UTC

I see science as a model. The picture is the dye Tyrean blue - I know this isn't anything like what the molecule looks like, but if you know the rules you can make predictions about the properties of the material.

What is science?

2017-11-25 04:53:36 UTC

Science is a process that builds knowledge

Double helix

2017-11-26 07:10:23 UTC

This iconic image for me represents the ultimate scientific discovery

Luigi Galvani's frog experiment

2017-11-27 16:43:26 UTC

Luigi Galvani (1737-1798) italian physician, physicist, biologist and philosopher. From his frog experiments in 1791 he discovered the electric basis of the nerves activity.

Nicola Tesla, underappreciated genius

2017-11-30 13:43:57 UTC

I saw this quote at the Science Center in Boston and it spoke to me of Tesla's visionary mind. True men of genius don't just break the rules, they make new ones.

2017-12-11 21:53:47 UTC

2017-12-21 17:08:31 UTC

Theory of Evolution:

2017-12-22 03:47:48 UTC

I think of Evolution when I hear science, but not necessarily something that is a positive development, but a theory that - in a way - pitted science against Biblical teachings:

Science

2017-12-27 10:08:45 UTC

Intrstin

Helping mankind forward

2018-01-02 13:03:41 UTC

I have recently read this book. It's written by a clinical psychologist/brother of a schizophrenic. It has really helped me cope, but also actively deal, with a personal situation I have been in, and I am now trying to help this person in my life, by employing the methods I've picked up by reading this book.

To me this describes one of the most important aspects of science. Helping people in any way.

Boyle's law

2018-02-22 00:41:50 UTC

determining mathematical relationships between phenomena is fundamental to science (image from Wikipedia)

Natural Science

2018-06-08 11:56:52 UTC

Science is the study of many things in detail, especially the intricate workings of nature which continues to fascinate and which also tend to dominate man.

Liebig's Kaliapparat

2018-06-11 15:16:39 UTC

This relatively simple chemical device invented by Liebig in 1831 was the breakthrough for chemical analytics.

Conservation of museum artefacts

2018-06-13 11:40:10 UTC

I'm currently studying for an MSc in the conservation of museum artefacts at Cardiff University. This degree starts with the basics of conservation science, such as what objects are made from and how they degrade and it doesn't assume any prior scientific background. Here I am (Mandy Garratt) looking at a silver gelatin print photograph circa 1909 under the microscope to observe the damage that has occurred to it, before I can decide upon the best treatment to slow down the decay process.

Building models

2018-06-16 07:57:24 UTC

I've chosen an orrery as an example of how scientists construct and analyse models in order to gain understanding of the natural world. From physical models, scale models, or mathematical models, the ability of scientists to use something that may not accurately represent the system they are modelling or may be based on a lot of idealised assumptions but still be able to come to an understanding of a real system, is fascinating.

Foucault's pendulum

vickie_campbell — 2018-06-16 14:30:44 UTC

The Foucault pendulum or Foucault's pendulum is a simple device named after French physicist Léon Foucault and conceived as an experiment to demonstrate the Earth's rotation. The pendulum was introduced in 1851 and was the first experiment to give simple, direct evidence of the earth's rotation. Today, Foucault pendulums are popular displays in science museums and universities.

one of my favorite images of science

2018-06-17 20:18:50 UTC

Ernst Borse

Microscope!!!

2018-06-23 14:34:22 UTC

I believe that the microscope was a pivotal moment in sc
ientific discovery that led to immeasurable amounts of valuable information that changed lives.

Cloud Chamber Images.

2018-06-25 14:39:51 UTC

My first experience observing subatomic particles interacting with gas molecules.

Epicycles in astronomy

2018-07-09 12:27:48 UTC

This was Ptolemy's basis system he constructed based on dogma and observation. That his epicycle system was in effect constructing the first few terms of a Fourier series approximating the actual apparent orbits (mathematics that wouldn't be developed for two millenia) is astonishing and humbling to me. A reminder of how even in getting things wrong, we can make enlightening progress.

Color measuring

2018-07-15 18:48:17 UTC

A densitometer is a device that measures the degree of darkness of a photographic or semitransparent material or of a reflecting surface. It is basically one result of the foundation of the prisma (breaking up light to divide colors). This particular one is used in the printing industry to measure the density of the basic colors.

Atomic theory

2018-07-24 07:28:44 UTC

John Dalton built upon the suggestion proposed by Democritus on the existence of atoms. In 1808, John Dalton presented his theory:
1: All matter is made of atoms. Atoms are indivisible and indestructible.
2: All atoms of a given element are identical in mass and properties.
3: Compounds are formed by a combination of two or more different kinds of atoms.
4: A chemical reaction is a rearrangement of atoms.

Moon Landing

2018-07-24 18:22:17 UTC

Years of innovation and discovery led to the moon landing. I'm still so impressed that they even managed to reach the moon despite the very basic technology they had at the time.

AN ARTIFICIAL UTERUS FOR VERY PREMATURE BABIES BY KOUASSI N’NANCOCQUOT CHRYSTELLE

2018-12-11 01:24:14 UTC

Has the solution been found to provide premature infants with better chances of healthy survival? Researchers at the Children's Hospital of Philadelphia (USA) designed an artificial uterus, an airlock for babies born too early, between the maternal womb and the open air. Preliminary tests on premature lambs are encouraging, according to a study published in Nature Communications.

A photo of tests of the artificial uterus on lambs, published in "Nature" on April 25th 2017.

goncalvesdouglas452 — 2019-01-02 23:40:54 UTC

We can now see further into the skies than ever before.The Hubble Space Telescope has made repeat visits to a tiny patch of sky throughout the last 10 years, collecting over 2,000 images over a total of 50 days with a total exposure time of two million seconds. Astronomers have now combined these images to create eXtreme Deep Field (XDF), the deepest image ever taken of our Universe.Approximately 5,500 galaxies can be seen in the image, including our neighbouring Andromeda Galaxy, spiral galaxies similar to the Milky Way and fuzzy red galaxies where new star formation has ceased. The repeated exposures have enabled the telescope’s infrared camera to capture faint galaxies that are one ten-billionth the brightness of what the human eye can see.This is also a glance back into the Universe’s distant past, as the XDF reveals galaxies that span back 13.2 billion years in time — an impressive feat when you remember that the Universe itself is estimated to be 13.7 billion years old. So most of the galaxies we can see in this image would have been young, small and growing as they collided and merged.

2019-01-11 08:00:16 UTC

Spectroscopy

2019-01-14 14:39:48 UTC

The invention of the spectroscopy opened the door for the understanding of the physics of atoms and molecules.

DNA molecule

2019-01-16 03:30:46 UTC

A brand new world was unveiled with the discovery of the DNA molecule.

Hypatia solving the problem of orbits.

jollygoodbean — 2019-02-10 11:21:09 UTC

Hypatia positing an ellipse as the path of the Earth around the Sun, using sand, sticks, rope, and thought, an event which is itself conjecture.

Carl Sagan's "Pale Blue Dot"

pab42 — 2019-06-06 10:09:54 UTC

Video at: https://youtu.be/EPXYUR5TqAQ
(You can skip the advert...)

Cloning

2019-06-10 11:00:11 UTC

http://www.clipartpanda.com/clipart_images/downloads-1620044

Johannes and Elisabeth Hevelius

2019-06-11 04:27:50 UTC

cravenrobert — 2019-06-11 06:03:44 UTC

Galileo

2019-06-16 19:27:37 UTC

Chemical structure (pic curtesy of holger)

2019-06-17 22:25:52 UTC

2019-06-19 05:12:22 UTC

Biogenesis vs.spontaneous generation

2019-06-25 05:25:12 UTC

Louis Pasteur gave a final blow to the theory of spontaneous generation

Science in one image

disidora77 — 2019-07-06 18:12:44 UTC

Bacon would be pleased to know that so many followed in his footsteps...

2019-12-05 23:43:43 UTC

Science is organized awe

greenfyre_mike — 2019-12-09 18:24:18 UTC

Newton's Principia diagram

lpettibone — 2019-12-23 12:07:32 UTC

While researching Newton's Laws of Gravity at the Royal Society Library in London, I came across this later version of the Principia, meant for public consumption, called A Treatise on the System of the World (1728). This diagram explains the trajectory due to gravity and acceleration of a rock thrown from an extremely tall mountain (without the interference of air resistance). Outlandish but Newtons theories and cementing of the scientific method transformed science.

Black hole

rmerkus — 2019-12-23 15:35:14 UTC

First photographic representation of a black hole

2020-01-12 15:57:05 UTC

Dr Frankenstein’s laboratory - literature and films have coloured the public’s perception of scientist‘s and their work - no more so than Frankenstein

a basic design with simple measurement, easy to repeat, also elsewhere.

prvanderwerf — 2020-01-29 04:28:01 UTC

stil in everyday use.

kazsteeleactress — 2020-11-30 07:26:51 UTC

2020-12-06 16:30:31 UTC

Glacer Science

trace19 — 2020-12-07 18:08:50 UTC

I'm retired now, and the last place I worked didn't allow photography.

This is a picture of my daughter working in the field. She is a glacier scientist with the US Geological Survey in Anchorage, Alaska. Her group studies the mass balance of glaciers: Over years are they gaining or losing ice? Part of the data collection involves automated stations that record weather. The picture shows her working on one of the stations. She obviously enjoys "doing" science.

The Solvay 1913 conference

giesenowm — 2020-12-07 19:52:41 UTC

The most brilliant minds in the world working together.

Pioneer plaque

2020-12-09 13:26:52 UTC

The pioneer plaque was created largely by scientists of Earth to communicate with scientific extra terrestrials. It contains chemical, physical and biological phenomena. Ambitious but flawed, still an iconic representation of scientific knowledge on this planet.
Image credits:
Vectors by Oona Räisänen (Mysid); designed by Carl Sagan & Frank Drake; artwork by Linda Salzman Sagan, Public domain, via Wikimedia Commons

2020-12-10 18:53:35 UTC

Marie Curie

2020-12-11 12:02:53 UTC

https://www.atomicarchive.com/resources/biographies/marie-curie.html

Space Exploration

2020-12-13 12:37:39 UTC

An Einstein ring is a proof of General Relativity and is created when light from a galaxy or star passes by a massive object en route to the Earth. Due to the curve in space-time (gravitational lensing) the light is diverted, making it seem to come from different places. If source, lens, and observer are all aligned, the light appears as a ring. Taken by the Hubble Space telescope, itself one of the most successful measuring devices ever built.

Three phase voltage and current waves.

2020-12-14 07:26:50 UTC

Turing Machine

2020-12-20 20:39:09 UTC

The amount of think work that was put into creating the "turing computer" by Alan Turing.
https://en.wikipedia.org/wiki/Alan_Turing

Information Theory

2020-12-20 20:49:27 UTC

The ground work for information theory done by Claude Shannon.
How much information is there in DNA, Noise, etc. What is information?
https://nl.wikipedia.org/wiki/Claude_Shannon

2020-12-29 11:40:48 UTC

Certainty cannot be reached !!

The anatomy lesson by Rembrandt

2021-01-01 11:47:37 UTC

There are several paintings that illustrate scientific progress. This is one of the most iconic. I feel that the paintings that come to my mind illustrate the 'magic' of scientific discovery and advancement which is the thing that drew me to doing this course.

2021-01-02 06:05:12 UTC

Sphygmomanometer

danny1916 — 2021-01-10 18:38:37 UTC

This is an experiment in chemistry. The image with little bottles containing substances for doing experiment is iconic, I think.

mariogmartinez2011 — 2021-01-11 11:30:55 UTC

Science

2021-01-27 19:55:16 UTC

Speed of light experiment

2021-02-07 15:49:10 UTC

This experiment shows for me how science can in a relative easy way discover something very complex.

science

2021-02-12 14:46:59 UTC

Science makes me think of glass bottles with various liquids in all colors.

Actor network theory

2021-02-14 12:46:51 UTC

Science

2021-02-15 10:46:15 UTC

Science reminds me of laboratory.

Pavlov's Classical Condition experiments

2021-02-21 19:12:36 UTC

Through conducting experiments, Ivan Pavlov found out that certain stimuli could be linked together and be associated with one another. This could be done in such a way that the original stimulus could be removed in its entirety, and the same original reaction would still be provoked through the second stimulus that was introduced. This he called the Classical Condition.

The mind

2021-02-22 15:56:02 UTC

I immediately think of the human brain, not only because there is so much about it unknown to us, but because without it, science wouldn't be possible.

Isolated reconstruction

2021-02-22 16:55:18 UTC

What you see here, is the injection of a certain substance into a lab rat. I chose this image, because I think it is useful in explaining the core of the phenomenon science. What you see here is an isolated reconstruction of a certain process. Lab rats are used to test new pharmaceutics on. Scientists have reason to suspect that the substance they have created, brings about a certain effect in a human being. To check this, the scientists try to recreate the environment that the substance is supposed to be going to be used for as best as possible, and thus the environments in which they expect the drug to work. This is why they use lab rats (for they have some similarities to humans). After they inject the lab rat, they regularly check the rats for both the positively expected effects, as well as for the negative effects. The rats are kept out of nature, so that they can 1.) minimize the factors influencing the results of the experiment and 2.) monitor whatever factors do influence the experiment as best as possible. This experiment is the first step into checking the safety of many pharmaceuticals.

science

2021-02-22 21:48:21 UTC

Isaac Newton, seeing the apple falling from the tree and discovering gravity

NEMO

2021-02-23 07:47:21 UTC

Science reminds me of NEMO, a science museum in Amsterdam where I came once when I was little.

Antoni van Leeuwenhoek

2021-02-25 13:04:33 UTC

Antoni Van Leeuwenhoek had learned himself how to make lenses and developed a kind of microscope. Although he was not a real scientist, this discovery was groundbreaking for science.

Science

2021-02-27 16:47:06 UTC

When I think science I immediately think of my dad, He is a scientist and a researcher for wetsus. European centre of excellence for sustainable water technology.

2021-06-07 13:58:06 UTC

Humanity shared science is power.

A Symbol for Science

ellawagemakers — 2021-06-09 12:34:50 UTC

Encapsulating the world in a test tube and studying it under a microscope -- science would not be science without the skills of gathering data for purposes of observation and study and then sharing the new knowledge with others and applying it to improve the world we live in.

Bacteria in a Petri Dish

2021-06-09 20:43:14 UTC

Science is seeing what the eyes can't see

The key to genetics?

2021-06-10 15:30:26 UTC

The now-famous Photgraph 51, and Rosalind Franklin who realised its significance. A truly iconic image, which led the way to and through the Double Helix.

Kekulé's dream

2021-06-11 07:39:59 UTC

August Kekulé was one of the most prominent organic chemists of the 19th Century. He famously realised the structure of benzene in a day-dream.

https://images.app.goo.gl/pfApJT6WKSGPaxS47

2021-06-11 23:29:55 UTC

Raw science

2021-06-11 23:35:37 UTC

Iron smelting by night c1800

andrewzcooper — 2021-06-21 05:53:52 UTC

Watson and Crick pose in the early 90's with a replica of their model of the double helix. They developed their understanding of the structure of DNA using crystallographic images produced by Rosalind Franklin who would almost certainly have been nominated jointly for their Nobel prize had it not been for her early death. The picture represents the essential contribution of collaboration between experimenters and theoreticians to scientific progress.

The White Coat

prsheridan — 2021-06-27 15:29:45 UTC

Gravity experiment Galileo 1564 -1642

nicgriffin34 — 2021-07-07 15:26:32 UTC

Grounding

2021-07-12 11:02:20 UTC

Preparing Electrode for grounding of a mobile laboratory somewhere in the Negev Desert. That's me a good several years ago C1988. I'm a chief Electrician. Grounding is also for Electro Static Discharge. Keeping the crew safe.
Bob Schneider

2021-08-08 15:26:15 UTC

The moment when a huge part of physics we know today was realised.

Science is provisional

2021-08-31 15:51:39 UTC

2021-11-27 02:41:36 UTC

Producing vaccines

2021-12-09 09:51:23 UTC

picture experimental science

Discovery of Penicillin

2021-12-10 06:28:02 UTC

The discovery of penicillin involved observation and the use of scientific instruments for example microscopes and petri dishes.

May 7, 1895 - Russian physicist Alexander Popov conducts the first radio communication session using a radio receiver he created. It detected the emission of electromagnetic waves at a distance of up to 60 m from the transmitter. As an antenna, Popov used a wire raised by balloons to a height of 2.5 meters. The researcher was able to transmit the words Heinrich Hertz typed in Morse code from a transmitter to a receiver of his own design.

2021-12-13 21:51:51 UTC

peer review

amattos7 — 2021-12-30 17:42:38 UTC

2022-01-03 19:41:35 UTC

Louis Pasteur, one of my heroes in science, who produced the first rabies vaccine and did pioneering work in microbiology.

2022-02-09 02:14:44 UTC

This NASA photo represents science well. It shows Akihiko Hoshide working on a DNA sequencing experiment, and the International Space Station is the result of scientific discovery.

Why Science and Belief are Different

2022-02-11 08:34:29 UTC

enypnio — 2022-04-07 16:23:15 UTC

1535 Gonzalo Fernández de Oviedo y Valdés: La historia general de las Indias (with first picture of the pineapple)
Libro 7, capitulo 13 manuscript from Real Academia de Historia Madrid (l.), as in book (r.)

2022-05-24 16:09:53 UTC

"I have become death...the destroyer of worlds. I suppose we all thought that, one way or another." -

J. Robert Oppenheimer

Nuclear Medicine

2022-06-16 12:00:16 UTC

The area of medicine that I worked in for over 38 years. There were huge advances in both the imaging equipment and the radiopharmaceuticals used

Self-volunteered to test a new medication

2022-06-24 13:36:45 UTC

https://www.nytimes.com/2015/10/07/world/asia/tu-youyou-chinese-scientist-nobel-prize.html

Kurt @ Ivy Tech Community College - Bloomington

2023-07-12 01:14:58 UTC

This is me, with my telescope at the 2017 solar eclipse that came through the US. Fear not - I have a solar filter on the tube.

Observation in Biology

2023-08-06 06:53:39 UTC

I love teaching Biology and I integrate my lessons with the use of my optical microscope so kids can observe the microscopic life and draw what they see analysibg the features of the microorganisms they observe. I believe that practical observation and the use of scientific tools is paramount for learning science from an early age.

2023-10-04 02:17:10 UTC

I return to my defense of science as a synthesizer of mystical thought, and the de-hermetization that pre-scholastic thought provided. It is impossible to think of science as opposed to what cabalistics is, for example, but they are not contrary, they are not areas that claim contrary things, both reveal, but one uses methods better as long as reality requires them in positivists terms

Vaccine and preservation

2023-11-29 00:11:02 UTC

Schiehallion experiment to determine the mass of the earth

2024-07-28 00:02:39 UTC

Mendeleev's patterns of nature.

2025-09-01 14:16:51 UTC

Between 1868 and 1870, when attempting to classify the 56 known elements in preparation for a textbook, Mendeleev noticed patterns emerging; he claimed to have seen the completed periodic table in a dream. He predicted the existence of further elements and even what properties they might have. He was proven to be correct when Gallium and Germanium were discovered in 1875. The modern periodic table contains 118 known elements.

2026-02-27 16:33:32 UTC

Joseph Priestley's equipment that he used for his experiments with gases