General

In 1994, the National Institute of Standards and Technology (NIST) issued a press release that physicists there recently cooled atoms to 700 nanokelvins, the coldest temperature ever recorded for matter. NIST scientists chilled a cloud of cesium atoms very close to absolute zero using lasers to catch the atoms in an optical lattice. The atoms reached 700 nanokelvins, or 700 billionths of a degree above absolute zero. Zero kelvin (-273ºC), or absolute zero, is the temperature at which atomic thermal motion would cease. Since the late 1970s, physicists have sought to use lasers to cool atoms closer to absolute zero, primarily for improving atomic timekeeping, certain experimental measurements and lithography processes for the semiconductor industry.

Earth Science

In 1990, the space probe Magellan arrived at its planned polar orbit around Venus. As the planet rotated slowly beneath it, Magellan circled once every 3-hr 15-min, collecting radar images of the surface in strips about 17-28 km (10-17 mi) wide and radioed back the information. Magellan was carried into space in the shuttle cargo bay of STS-30 Atlantis, launched 4 May 1989, and was the first planetary spacecraft to be released from a shuttle in Earth orbit. The Magellan mission also provided gravity, atmospheric and other measurements. On 11 Oct 1994, it was directed towards the surface, collecting data until it broke up and partially vaporized in the atmosphere.

Physics

In 1831, Michael Faraday wound a thick iron ring on one side with insulated wire that was connected to a battery. He then wound the opposite side with wire connected to a galvanometer. He found that upon closing the battery circuit, there was a deflection of the galvanometer in the second circuit. Then he was astonished to see the galvanometer needle jump in the opposite direction when the battery circuit was opened. He had discovered that a current was induced in the secondary when a current in the primary was connected and an induced current in the opposite direction when the primary current was disconnected.

Biology

In 1947, the first full synthesis route for vitamin A was found by Dutch chemists, Jozef Ferdinand Arens and David Adriaan van Dorp. Later in 1947, a team headed by O. Isler also synthesized vitamin A using a method more suitable to produce commerical quantities. In 1913, Thomas B. Osborne and Lafayette Mendel had shown experimentally with rats that butter contained a factor responsible for growth development. Their work was confirmed (1913) by Elmer McCullum and Marguerite Davis who also identified a fat-soluble nutrient in butterfat and cod liver oil. It became known as vitamin A, and its chemical structure was determined in 1931 by Paul Karrer.

Chemistry

In 1903, the journal Nature reported that helium gas is produced by the radioactive decay of the radium. This key discovery by William Ramsay and Frederick Soddy helped to reveal the structure of atoms. In 1908, Ernest Rutherford confirmed that alpha rays and these radium emanations were one and the same: the nuclei of helium atoms, bearing a positive electrical charge. Each were future Nobel laureates in Chemistry. Ramsey won the Nobel Prize in 1904 for his discovery of the noble gases. Rutherford was recognized in 1908 for his investigations into the disintegration of the elements. Soddy was honored in 1921 for his pioneering contributions to understanding the chemical properties of radioactive elements such as radium and uranium.

And here is a quote for you and your students to consider.

A science is not mere knowledge; it is knowledge which has undergone a process of intellectual digestion. It is the grasp of many things brought together in one, and hence is its power; for, properly speaking, it is Science that is power, not Knowledge.., — John Henry Newman

General

Leap Years are needed to keep our calendar in alignment with the Earth's revolutions around the sun. It takes the Earth approximately 365.242199 days (a tropical year) to circle once around the Sun. If we didn't add a day on February 29 nearly every 4 years, we would lose almost six hours every year. After only 100 years, our calendar would be off by approximately 24 days!

Biology

In 1947, the first closed-circuit broadcast of a surgical operation showed procedures to observers in classrooms. Dr. Alfred Blalock, at Johns Hopkins Hospital, Baltimore, Md., demonstrated two operations on the heart. Two more heart operations were also seen and one on nerves of the spine.

Earth Science

In 1924, Harlow Shapley wrote back in reply to the letter from Edwin Hubble which presented the measurement of 300,000 parsecs as the distance to the Andromeda nebula. That was the first proof that the nebula was far outside the Milky, in fact, a separate galaxy. When Shapley had debated Heber Curtis on 26 Apr 1920, he presented his firm, life-long conviction that all the Milky Way represented the known universe (and, for instance, the Andromeda nebula was part of the Milky Way.)  On receipt of the letter, Shapley told Payne-Gaposchkin and said “Here is the letter that has destroyed my universe.” In his reply, Shapley said sarcastically that Hubble's letter was “the most entertaining piece of literature I have seen for a long time.” Hubble sent more data in a paper to the AAS meeting, read on 1 Jan 1925.

Physics

In 1932, the neutron was discovered by Dr. James Chadwick.

Chemistry

In 1900, German chemist Felix Hoffmann was issued a U.S. patent for “Acetyl Salicylic Acid” (No. 644,077). It was assigned to the Farben-Fabriken of Elberfeld Company, of New York. Hoffmann had discovered the chemical compound on 10 Aug 1897 while a researcher at the Bayer Company. It was marketed as Apirin, the familiar pain reliever, which at the time was a trademarked name. It was first sold in Germany in powder form, from 1 May 1899, and later in the more convenient tablet form, from 1 Jan 1915.

Quote

Here is a quote for you and your students to consider.

If you don't have time to do it right, when will you have time to do it over? - John Wooden

Thank you for your continued support and please don't hesitate to contact me when I can be of assistance. If you know of any your colleagues who would also like to receive our "Science Newsletter" just have them contact me by email and I will be glad to add their name to our distribution list.

General

Leap Years are needed to keep our calendar in alignment with the Earth's revolutions around the sun. It takes the Earth approximately 365.242199 days (a tropical year) to circle once around the Sun. If we didn't add a day on February 29 nearly every 4 years, we would lose almost six hours every year. After only 100 years, our calendar would be off by approximately 24 days!

Biology

In 1947, the first closed-circuit broadcast of a surgical operation showed procedures to observers in classrooms. Dr. Alfred Blalock, at Johns Hopkins Hospital, Baltimore, Md., demonstrated two operations on the heart. Two more heart operations were also seen and one on nerves of the spine.

Earth Science

In 1924, Harlow Shapley wrote back in reply to the letter from Edwin Hubble which presented the measurement of 300,000 parsecs as the distance to the Andromeda nebula. That was the first proof that the nebula was far outside the Milky, in fact, a separate galaxy. When Shapley had debated Heber Curtis on 26 Apr 1920, he presented his firm, life-long conviction that all the Milky Way represented the known universe (and, for instance, the Andromeda nebula was part of the Milky Way.)  On receipt of the letter, Shapley told Payne-Gaposchkin and said “Here is the letter that has destroyed my universe.” In his reply, Shapley said sarcastically that Hubble's letter was “the most entertaining piece of literature I have seen for a long time.” Hubble sent more data in a paper to the AAS meeting, read on 1 Jan 1925.

Physics

In 1932, the neutron was discovered by Dr. James Chadwick.

Chemistry

In 1900, German chemist Felix Hoffmann was issued a U.S. patent for “Acetyl Salicylic Acid” (No. 644,077). It was assigned to the Farben-Fabriken of Elberfeld Company, of New York. Hoffmann had discovered the chemical compound on 10 Aug 1897 while a researcher at the Bayer Company. It was marketed as Apirin, the familiar pain reliever, which at the time was a trademarked name. It was first sold in Germany in powder form, from 1 May 1899, and later in the more convenient tablet form, from 1 Jan 1915.

Quote

Here is a quote for you and your students to consider.

If you don't have time to do it right, when will you have time to do it over? - John Wooden

Thank you for your continued support and please don't hesitate to contact me when I can be of assistance. If you know of any your colleagues who would also like to receive our "Science Newsletter" just have them contact me by email and I will be glad to add their name to our distribution list.

January Science Newsletter

We hope that you are successful in working with your students to keep them excited about the process of science. We know that in the middle of the school year it can get to be a real challenge to keep your students focused on all that you have to offer. I encourage you to keep up the good work. And don’t hesitate to contact Capital Microscope when you are looking for the perfect science equipment to make science the exciting, active process that we know it can be.

We have some terrific values on our website. Click here to go to our home page to find all the Special Offers shown on that page. For example the National EcoLine Handheld Digital USB Microscope is only $89. This handheld digital USB microscope can enhance students’ discovery process by letting them see things up close. It also allows the capture of images on your computer so you can use the images to further enhance your students’ understanding of science.

We also continue to have great pricing on all our Ohaus balances such as the Ohaus Scout Pro. It has a 400 g capacity with a precision of 0.1 g and is specially priced at only $127.40. You can also find more about all our balances on our website at Balances.

Now is also a good time to schedule my visit to your school to service your microscopes and balances. I can work within your budget to get your equipment in top shape so your students can perform well in the lab with minimal frustration. Go to our Microscope Service page on our website to find out exactly all that our service includes. Contact me directly to discuss how we can help you get your microscopes operating like new at an extremely reasonable cost. We also can adjust, calibrate, zero, and clean mechanical balances. This will help those weighing labs go much smoother for you students.

Quote

Here is a quote to help your students understand the importance of experimentation.

It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong. - Richard P. Feynman

January Science History Tidbits

General

In 1885, the first U.S. patent for a roller coasting structure was issued to La Marcus Thompson of Coney Island, NY. (No. 332,762). Coney Island, at the terminus of New York City's extensive trolley line, was already a popular amusement park in 1884, when Thompson opened a new attraction - the Gravity Pleasure Switchback Railway. For a five-cent ticket, passengers sat sideways in cars that by gravity descended the gentle waves of the 600-foot wooden mini-railway, reaching a top speed of six miles per hour. The enormously popular ride earned back Thompson's original $1,600 investment within three weeks. Within four years, he had built about 50 more across the nation and in Europe. On 22 Dec 1885, he patented the gravity switch-back railway.

Biology

In 1947, Stanford University reported the isolation of the polio virus, after three years of research funded by the National Foundation for Infantile Paralysis. The work was done by Drs Hubert S. Loring and C.E. Schwerdt of the Stanford Dept. of Chemistry. Laboratory tests and photographs showed it to be at least 80% pure, and that it could lead to producing an impurity-free vaccine for use against infantile paralysis. Other vaccines existing at the time had problems with large amounts of impurities. The virus was obtained by purification from ground-up brain and spinal cord of rats infected with the polio virus. Electron microscope photographs showed the virus as a spherical partical about 25 nanometers across.

Earth Science

In 1610, Galileo dated his first letter describing telescopic observations in which he saw the moon's cratered surface using his twenty-powered spyglass. He wrote, “... it is seen that the Moon is most evidently not at all of an even, smooth, and regular surface, as a great many people believe of it and of the other heavenly bodies, but on the contrary it is rough and unequal. In short it is shown to be such that sane reasoning cannot conclude otherwise than that it is full of prominences and cavities similar, but much larger, to the mountains and valleys spread over the Earth's surface.” Galileo went on to describe the phenomena in considerable detail, rehearsing, as it were, the observations and conclusions he was to publish more elaborately a few months later in Sidereus Nuncius.

Physics

In 1919, Professor Ernest Rutherford succeeded in splitting the atom. By bombarding nitrogen atoms with alpha particles emitted by radioactive materials he transmuted the nitrogen atoms into oxygen.

Chemistry

In 1833, Robert Kane, a 24-year-old Irish chemist, published a paper in which he was the first to propose the existence of the -C2H5 ethyl radical (Dublin Journal of Medical and Chemical Sciences, which he founded). His idea was initially "a subject of amusement and ridicule among the chemical circles" of Dublin. A year later, when similar ideas were proposed by Justus Liebig, the authority of that great German chemist gave credibility to the concept, and Kane eventually received the credit for it. By the age of 22, he had already written a book, Elements of Practical Pharmacy, and was a professor of chemistry at Dublin's Apothecaries' Hall. His research spanned inorganic, organic, physical, biological and applied chemistry.