The document summarizes the events of December 2, 1942, when Enrico Fermi and a team of scientists at the University of Chicago achieved the first self-sustaining nuclear chain reaction. Key points:
- Fermi led a team that constructed a crude pile of black bricks and wooden timbers in a squash court under Stagg Field.
- At 3:25 pm on December 2, 1942, the control rod was withdrawn, initiating the first controlled, self-sustaining nuclear chain reaction.
- This successful experiment confirmed that a nuclear chain reaction was possible and provided a proof of concept for future nuclear reactor research during World War II and afterward.
Haiku Deck is a presentation platform that allows users to create Haiku-style slideshows. The document encourages the reader to get started creating their own Haiku Deck presentation on SlideShare by providing a link to do so. It aims to inspire the reader to try out Haiku Deck's unique presentation style.
The document summarizes the events of December 2, 1942, when Enrico Fermi and a team of scientists at the University of Chicago achieved the first self-sustaining nuclear chain reaction. Key points:
- Fermi led a team that constructed a crude pile of black bricks and wooden timbers in a squash court under Stagg Field.
- At 3:25 pm on December 2, 1942, the control rod was withdrawn, initiating the first controlled, self-sustaining nuclear chain reaction.
- This successful experiment confirmed that a nuclear chain reaction was possible and provided a proof of concept for future nuclear reactor research during World War II and afterward.
Haiku Deck is a presentation platform that allows users to create Haiku-style slideshows. The document encourages the reader to get started creating their own Haiku Deck presentation on SlideShare by providing a link to do so. It aims to inspire the reader to try out Haiku Deck's unique presentation style.
Occupational safety and health has its origins in the Medieval era, when physicians first described diseases affecting miners and other workers exposed to dust. Throughout history, various occupations like chimney sweeping led to increased cancer risks due to exposures. Today we have more knowledge about protecting workers, though not all hazards can be prevented. Managers must consider facilities, processes, and risks like physical, chemical, and ergonomic hazards. Developing standard procedures and notifying workers of updates is important to minimize risks. A safety manager's role includes understanding risk categories like chemicals, noise, dust and machinery issues common to their industry. Management bears responsibility for employee safety and ensuring compliance with regulations.
This document discusses environmental management and sustainability efforts in business. It outlines several key things to consider for a successful environmental management system, including total commitment from company management, dedicated individuals in designated positions, and a management system tailored to the company's needs. The document then provides details on setting up an environmental management system, including collecting data on resource usage, waste production, transportation emissions, and other metrics. Analyzing these figures can provide insights into production and opportunities for cost savings through reduced resource consumption and risk mitigation.
The document discusses various issues an organization may face and areas a consultant could help address. Key issues include:
1) Staffing costs being too high or staff not efficiently using their time.
2) Revenue generated per unit of time being too low.
3) High costs of chemicals, supplies, products, transportation and inefficient processes.
4) The organization lacking the right type, size, competencies or distribution of staff, machines, and management of quality, the environment, and facilities to operate profitably.
Occupational safety and health has its origins in the Medieval era, when physicians first described diseases affecting miners and other workers exposed to dust. Throughout history, various occupations like chimney sweeping led to increased cancer risks due to exposures. Today we have more knowledge about protecting workers, though not all hazards can be prevented. Managers must consider facilities, processes, and risks like physical, chemical, and ergonomic hazards. Developing standard procedures and notifying workers of updates is important to minimize risks. A safety manager's role includes understanding risk categories like chemicals, noise, dust and machinery issues common to their industry. Management bears responsibility for employee safety and ensuring compliance with regulations.
This document discusses environmental management and sustainability efforts in business. It outlines several key things to consider for a successful environmental management system, including total commitment from company management, dedicated individuals in designated positions, and a management system tailored to the company's needs. The document then provides details on setting up an environmental management system, including collecting data on resource usage, waste production, transportation emissions, and other metrics. Analyzing these figures can provide insights into production and opportunities for cost savings through reduced resource consumption and risk mitigation.
The document discusses various issues an organization may face and areas a consultant could help address. Key issues include:
1) Staffing costs being too high or staff not efficiently using their time.
2) Revenue generated per unit of time being too low.
3) High costs of chemicals, supplies, products, transportation and inefficient processes.
4) The organization lacking the right type, size, competencies or distribution of staff, machines, and management of quality, the environment, and facilities to operate profitably.
1. Missuppfattningar
Område Delmoment Känd missuppfattning Korrekt uppfattning Förklaring via konkret
material/övrigt
Tal Division Divisionen ger alltid ett mindre
tal som svar
Division med tal mindre än 1 ger svar
som är större än täljaren
Tänk innehåll, se hur många
små delar som ryms i täljaren.
Hur många ger svaret.
Multiplikation Multiplikation ger alltid ett
större tal som svar
Multiplikation med tal mindre än 1 ger
svar som är mindre än täljaren
Tänk uppdelning av
multiplikationen exempelvis att
5*0,3=5*3*0,1 och 0,1 är en
tiondel (av). Du får en tiondel av
svaret till 5*3.
Olika räknesätt Beräkningar görs från alltid
från vänster till höger
(Parenteser och potensuttryck allra
först) Räknesätten division och
multiplikation görs alltid före addition
och subtraktion. [PPDMAS]
Jämför betydelsen av uttryck
med eller utan parenteser eller
potenser. Det blir skillnad. ”två
(korv med bröd) blir inte två
korv och ett bröd. 2(3+4) är inte
samma sak som 2*3+4.
Tiosystemet,
decimaltal
Svar som ”0,9 är mindre än
0,10”
Missuppfattning att ”noll
komma nio” följs av ”noll
komma tio”
[Saknats genomgång av
tallinjer av typen 0-0,1-
0,2…0,9-1,0…]
Skriv om talen så de får lika många
decimaler (0,90 och 0,10). Jämför
decimal för decimal från vänster till
höger – första decimalen som skiljer
sig åt och är större, där är det största
talet. 9 är större än 1 i exemplet.
Titta på olika tallinjer och var de
olika decimaltalen hamnar.
Träna på att räkna i både
tiondels-, hundradels- och
tusendelshopp. Tänk på att
uppläsning av decimaltalen
ibland kan ge fel känsla för hur
stora de är/var de är.
Multiplikation,
decimaltal
Svar som ”0,5*0,8=0,04”
Fel i placering av siffrorna i
svaret
Jämför med heltal (5*8=40) och ändra
så att du får antal decimaler=antal från
första termen+antal från sista termen:
1 decimal + 1 decimal=2 decimaler:
0,40.
Öva multiplikation med
uppställning – kolla hur många
decimaler du får, var
decimalkommat sätts. Ibland kan
jämförelse med bråk vara bra,
2. till exempel ”hälften av 0,8” –
då måste det bli 0,4.
Multiplikation,
decimaltal
Osäkerhet i multiplikation med
0,1-0,01-0,001
OBS att multiplikation med 0,1 är
samma sak som division med 10 osv:
Division med 10 gör att
”decimalkomma flyttas 1 steg åt
vänster”. Talet blir 10 gånger mindre.
Bråk