Other distinctive area drops include pickle in Dillsburg, button in Carlisle, white rose in York, anchor in Shippensburg, Bucky the Beaver in Beavertown, lightbulb in Sunbury, wrench in Mechanicsburg, kettle in McClure, coal in Shamokin, and duck decoy in Havre de Grace (Maryland). Many “dr...
000 for the latest models [source:Sullivan]. The modern-day incinerators are usually automated or computerized and can be programmed to adjust the temperature as needed. They burn natural gas, propane or diesel instead of the coke and coal that fueled retorts as late as the 1960s,...
dubbed “Miner’s Friend.” Savery’s steam pump comprised a boiling chamber that directed steam into a separate container. Inside, the container had a pipe equipped with a non-return valve extended into the water that required extraction. The cold water that was poured onto the steam-filled ...
A fire-tube boiler was more common in the 1800s. It consists of a tank of water perforated with pipes. The hot gases from a coal or wood fire run through the pipes to heat the water in the tank. In a fire-tube boiler, the entire tank is under pressure, so if the tank bursts it...
when the remains of certain clam shells are found in limestone,the geologist can assume that the region was once covered by a shallow sea,because that is where clams live today.Also,by using what we know of living organisms,we can conclude that fossil animals with thick shells capable of ...
The existence of fossils had been known for centuries,yet it was not until the late 1700s and early 1800s that their significance as geologic tools was made evident.During this period an English engineer and canal builder,William Smith,discovered that each rock formation in the canals he worked...
They say the truest beauty is in the harshest land and that God can be found there by those with open eyes. But my eyes were closed against the shifting winds that can blind a person in an instant. Breathing itself was a miracle when the storms came whirling across the earth. One size...
Probably the most quintessential family-style comfort food of the last 50 years, this beige feast was inexpensive to make and incredibly filling. It reheated as if it were just made. While mixing fish and cheese might seem blasphemous in today's Food Network world, it somehow just worked. ...
What was the source of the positive and negative charges? As we'll see in the next section, scientists were able to answer that question in the 1800s.Electricity and Atomic Structure Inside an atom Toward the end of the 19th century, science was barreling along at an impressive...
There are three musical strips in central and northern Japan—one of which plays the tune of a Japanese pop song. Reports say the system was invented by Shizuo Shinoda. He scraped some markings into a road with a bulldozer before driving over them and found that they helped to produce all...