Tech

Google Doodle celebrates periodic table pioneer Lothar Meyer – CNET

Published

10 months ago

August 18, 2020

google-doodle-meyer-2020 — Google celebrates the 190th birthday of German chemist Lothar Meyer.
Google

If you ever had to memorize the periodic table of chemical elements, the name Lothar Meyer may be familiar to you.

For it was Meyer, a German chemist, professor and author, who was one of two scientists to pioneer the earliest periodic tables and discover the periodic law of chemical elements. To celebrate his contribution to science, Google dedicated its Doodle on Wednesday to Meyer on his 190th birthday.

Born Julius Lothar Meyer in Varel, Germany, in 1830, Meyer initially followed in his father’s footsteps, studying medicine. But after a few years of study, he shifted his focus to chemistry and began teaching science.

In 1864, Meyer published Die modernen Theorien der Chemis (Modern Chemical Theory), which contained an early version of the periodic table containing 28 elements classified for the first time into six families based on their atomic weight.

At the same time that Meyer was working on his table, Russian chemist Dmitri Mendeleev was formulating his own periodic table, which featured an arrangement he said came to him in a dream. Meyer’s initial pattern arranged the elements in horizontal form, but before he could publish a revision in vertical form in 1870, Mendeleev published a periodic table in 1869 that included all the elements known at the time and corrected some atomic weights.

A few months later, Meyer published his revision, which included a line chart showing the relationship between atomic volume and atomic weight and the periodic relationship of the elements. Meyer’s chart is depicted on the chalkboard of Wednesday’s Doodle.

Though Meyer developed his revision independently, he acknowledged Mendeleev’s priority.

In recognition of their work on periodic law, both Meyer and Mendeleev were awarded the Davy Medal by the Royal Society in 1882.

See all photos

+46 More

Source : CNET Read More

Tech

Charge Your Phone Wirelessly With 50% off a Multifunctional LED Lamp

Published

4 months ago

February 10, 2021

theworldtrend

Best Tech Deals

Best Tech DealsThe best tech deals from around the web, updated daily.

When you’re ready to turn in for the night, you don’t want to forget to charge your phone— especially if your mobile device doubles as your alarm clock.

With this wireless charger lamp, you can make this crucial step of your nightly routine even easier by just setting your phone on the wireless charging pad and… well, that’s all there is to it!

Other functions include multiple lighting modes as well as a sleep timer option for auto shut-off of the light after 30 or 60 minutes.

This lamp can be yours in white for $18 if you clip the coupon on Amazon (it’s below the original $40 price) and add promo code ABC88699 at checkout.

G/O Media may get a commission

You can snag the black version for $20 using the same code—no coupon though, sorry.

Don’t sleep on this deal! Who knows how long stock or the coupon code will last?

Source

Tech

Keep That Hotdish Hot With 65% Off a Luncia Casserole Carrier, Only $11 With Promo Code

Published

6 months ago

December 22, 2020

theworldtrend

Best Home Deals

Best Home DealsThe best home, kitchen, smart home, and automotive deals from around the web, updated daily.

Luncia Double-Decker Dish Carrier | $11 | Amazon | Promo code SDDU9S7F

It has been a long time since the days we could safely have a potluck or other gatherings, but we have a fantastic deal perfect for once those times return. These double-decker Luncia dish carriers can be had for 65% off when you add promo code SDDU9S7F at checkout and clip the coupon on the site (it’s just below the price). These holders fit 9″x 13″ sized baking dishes.

That means you can insulate and keep two dishes of food warm for only $11 instead of $30. What’s more, your Luncia carrier will arrive by Christmas if you order today as a Prime member.

Just add promo code SDDU9S7F and clip the 5% off coupon to bring the price down to $11 for the blue or the grey option.

Grab this offer while it’s still around!

G/O Media may get a commission

Source

Tech

Conquer Your Pup’s Dander and Fur With $700 Off a Cobalt or Charcoal Bobsweep PetHair Plus Robot Vacuum

Published

8 months ago

November 1, 2020

theworldtrend

Best Home Deals

Best Home DealsThe best home, kitchen, smart home, and automotive deals from around the web, updated daily.

Bobsweep PetHair Plus Robot Vacuum & Mop (Cobalt) | $200 | Best Buy

Bobsweep PetHair Plus Robot Vacuum & Mop (Charcoal) | $200 | Best Buy

Allergies can be bad enough as the seasons change. Don’t let pet hair and dander add to that by vacuuming it up early and often. That chore is easier said than done— unless you have a robot vacuum to do the work for you. This lovely bright cobalt Bobsweep PetHair Plus robot vacuum and mop, only $200 today at Best Buy seems like an ideal option. That’s a whopping $700 off, by the way.

You can get the same deal for the charcoal version of the robot vac, too. This model is not only specially made for picking up pet hair, it self docks and charges when it’s finished with the work.

It also comes with a mop attachment, so it can take care of those kitchen floors for you as well. Grab it while it’s still available for this fantastic price!